⚙️ Methodology

Calculator Methodology

The exact formulas, statutory references, and assumptions behind every Finin2min financial calculator — published in full transparency so you understand what each number means.

🕐 Last updated: June 2026 · 10 calculators documented
Calculators Documented
  1. EMI Calculator
  2. SIP Returns Calculator
  3. Income Tax Calculator
  4. Capital Gains Calculator
  5. Buy vs Rent Calculator
  6. Lease vs Buy Calculator
  7. EV Cost Calculator
  8. Credit Card Interest Calculator
  9. Salary Restructuring Calculator
  10. Compare Investments Toolkit
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EMI Calculator
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EMI = P × r × (1 + r)ⁿ / [(1 + r)ⁿ − 1] Where: P = Principal loan amount r = Monthly interest rate (Annual rate ÷ 12 ÷ 100) n = Loan tenure in months
  • Interest rate applied as reducing balance — standard for all Indian home, car, and personal loans per RBI guidelines.
  • EMI payments made at end of each month (ordinary annuity).
  • Processing fees, prepayment charges, and insurance costs not included unless explicitly entered.
  • Reducing balance method: RBI Master Direction on Interest Rate on Advances (RBI/2015-16/101)
  • Current benchmark rates: RBI Policy Repo Rate communications
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SIP Returns Calculator
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FV = P × [(1 + r)ⁿ − 1] / r × (1 + r) Where: P = Monthly SIP instalment (₹) r = Expected monthly return (Annual CAGR ÷ 12) n = Number of instalments (Years × 12) FV = Future corpus at end of SIP period
  • Returns compounded monthly — standard for SIP projections per AMFI guidelines.
  • Assumed rate of return is a hypothetical forward-looking estimate, not a guarantee. Historical Nifty 50 20-year CAGR: 12–15%; default used: 12%.
  • No exit load, expense ratio, or tax drag deducted (illustrative purposes).
  • SIP instalments assumed at the beginning of each month.

LTCG on equity mutual funds above ₹1.25 lakh/year is taxable at 12.5% (post Budget 2024). The calculator shows gross corpus — actual tax depends on individual withdrawal pattern.

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Income Tax Calculator
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Income SlabTax Rate
Up to ₹4,00,000Nil
₹4,00,001 – ₹8,00,0005%
₹8,00,001 – ₹12,00,00010%
₹12,00,001 – ₹16,00,00015%
₹16,00,001 – ₹20,00,00020%
₹20,00,001 – ₹24,00,00025%
Above ₹24,00,00030%
Income SlabTax Rate
Up to ₹2,50,000Nil
₹2,50,001 – ₹5,00,0005%
₹5,00,001 – ₹10,00,00020%
Above ₹10,00,00030%

⛔ IMPORTANT — Surcharge marginal relief near thresholds is APPROXIMATE for mixed capital-gains income. At each surcharge threshold (₹50L / ₹1Cr / ₹2Cr / ₹5Cr) marginal relief is computed by scaling the entered income mix PROPORTIONALLY down to the threshold. This is a faithful, conservative approximation but is NOT exact for a taxpayer whose income crosses a threshold with an unusual slab/special-rate mix. Do not rely on output for income within ±5% of any threshold without professional surcharge review before filing.

  • Health & Education Cess: 4% on (Tax + Surcharge)
  • Surcharge (New Regime): 10% for ₹50L–₹1Cr; 15% for ₹1Cr–₹2Cr; 25% above ₹2Cr (capped at 25% per Finance Act 2023)
  • Surcharge (Old Regime): 10% → 15% → 25% → 37% at respective thresholds
  • Surcharge cap of 15%: applies to the income taxed under §111A, §112A and §112 (LTCG, including indexed 20% LTCG on land/building). Surcharge on this capped bucket never exceeds 15%, even where the income otherwise crosses the 25%/37% bands. Ordinary slab income and §115BBH (VDA) bear the full applicable rate.
  • New Regime: ₹75,000 (salaried/pensioners, Budget 2024)
  • Old Regime: ₹50,000

The §87A treatment is regime-specific. The Chapter XII special-rate exclusion is linked to §115BAC (the new regime); the old regime applies the standard enacted rebate provision, with only §112A carrying its own statutory restriction.

RegimeEligible Total IncomeRebate AmountCovers Special-Rate Income?
New Regime (§115BAC)Up to ₹12,00,000Up to ₹60,000 (tax fully nil if eligible)No — ALL Chapter XII special-rate income is excluded: §111A (equity STCG 20%), §112 (LTCG 12.5% / indexed 20%), §112A (equity LTCG 12.5%) and §115BBH (VDA 30%).
Old RegimeUp to ₹5,00,000Up to ₹12,500 (tax fully nil if eligible)§111A (equity STCG 20%) and §112 (property/gold LTCG 12.5% / indexed 20%) are included (rebatable) — no enacted provision extends the Chapter XII exclusion (tied to §115BAC) to the old regime for these. §112A is excluded (its own §112A(1) proviso). VDA under §115BBH is excluded under both regimes — the conservative position (see note below).

⚠ Note — VDA under §87A (both regimes): VDA income under §115BBH is treated as excluded from the §87A rebate under both the old and new regimes. This is the conservative position: §115BBH uses language analogous to the Chapter XII special-rate sections, and the Finance Bill 2025 memorandum links the Chapter XII first-proviso exclusion to §115BAC. Excluding VDA avoids a situation where a taxpayer claims §87A on VDA and later faces a demand plus interest. If §87A on VDA is subsequently held applicable under the old regime, you may be entitled to a refund. Please confirm with a qualified tax professional before filing.

The rebate is calculated on the slab-rate tax payable before cess and is capped at the actual tax liability, so it never produces a negative figure. It is applied automatically by the calculator. The additional capital-gains tax is computed as a full differential liability — total tax with the capital gains minus total tax without them — so any §87A rebate lost because the gains push total income past the rebate ceiling is correctly reflected.

Reinvestment exemptions are transaction-specific, not pooled: each exemption is linked to the source gain it is claimed against — §54 to LTCG from a residential house, §54EC to LTCG from land or building only, and §54F to LTCG from a non-residential-house asset (computed proportionally as investment ÷ net consideration × LTCG). One transaction's exemption cannot reduce another transaction's gain, and tax saved is valued at the actual applicable rate of the bucket reduced (not a flat 12.5%).

Marginal relief ensures that the additional tax payable (including surcharge) on income exceeding a surcharge threshold (₹50L, ₹1Cr, ₹2Cr under the New Regime; ₹50L, ₹1Cr, ₹2Cr, ₹5Cr under the Old Regime) never exceeds the additional income earned over that threshold. The calculator applies this as a statutory adjustment — it is not a user-selectable option — by comparing the surcharge-inclusive tax at the threshold against the surcharge-inclusive tax on actual income, and capping the excess surcharge accordingly.

⚠ Indicative only: For mixed capital-gains income near the ₹50L / ₹1Cr / ₹2Cr / ₹5Cr surcharge boundaries, the marginal-relief calculation uses a proportional-scaling approximation of the income mix at the threshold and may not reflect your exact liability. This figure is indicative, not a precise computation. For income near these thresholds, professional review is essential before filing.

Income Tax Act 1961 · Finance Act 2025 · CBDT Circular No. 1/2025 · Section 87A (rebate) · First Proviso to Paragraph A/AA of Part III, First Schedule, Finance Act (marginal relief)

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Capital Gains Calculator
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FY 2025-26 / AY 2026-27 only. Rates and rules reflect Finance (No. 2) Act 2024 as amended by Finance Act 2025. Each asset type below is documented as a separate row — no asset types are combined.

Financial YearCII (CBDT notified)
2024-25363
2025-26376

CII is notified by CBDT under Section 48 of the Income Tax Act. Indexation benefit is available only for property (rows 11–12) acquired before 23 July 2024 by Individuals or HUFs. It is not available for any other asset type in this calculator.

The calculator uses a day-accurate test: an asset is long-term only if the sell date is strictly after the date obtained by advancing the purchase date by the required number of calendar months. Selling on exactly the threshold date counts as short-term. This matches the statutory language and avoids month-approximation errors at month boundaries and around leap years.

HP = holding-period threshold in calendar months for LTCG (day-accurate). Rate S = STCG rate. Rate L = LTCG rate. §87A = whether Section 87A rebate can reduce this tax component.

# Asset Type HP (months) STCG classification LTCG classification Rate S Rate L Indexation? §87A covers? Statutory section Key limitation
1 Listed Equity Shares >12 strictly Held ≤12 months Held >12 months 20% §111A 12.5% above ₹1.25L/yr §112A No New regime: §111A and §112A excluded (Chapter XII). Old regime: §112A excluded by its own restriction; §111A not blanket-excluded. §111A, §112A Must be sold on a recognised stock exchange with STT paid. Grandfathering via FMV on 31 Jan 2018 for shares acquired before 1 Feb 2018 — user must enter grandfathered cost; calculator does not auto-look up FMV.
2 Equity Mutual Fund (≥65% domestic equity) >12 strictly Held ≤12 months Held >12 months 20% §111A 12.5% above ₹1.25L/yr §112A No No §111A, §112A Same ₹1.25L annual exemption as listed equity. Grandfathering via FMV on 31 Jan 2018 for units acquired before 1 Feb 2018.
3 Listed Bonds / Debentures >12 strictly Held ≤12 months Held >12 months Slab rate 12.5%, no indexation §112 No STCG yes (slab). LTCG §112 — No. §112 Only bonds listed on a recognised Indian exchange; unlisted bonds fall under §50AA (row 4).
4 Unlisted Bonds / Debentures — §50AA deemed STCG N/A deemed STCG Always deemed STCG regardless of holding period Not available Slab rate §50AA No Yes — slab-rate tax eligible for §87A §50AA No holding period can convert to LTCG. Applies to all unlisted bonds irrespective of duration held.
5 Debt Mutual Fund acquired before 1 Apr 2023 >24 strictly Held ≤24 months Held >24 months Slab rate 12.5%, no indexation §112 No STCG yes. LTCG §112 — No. §112 Acquisition date must be before 1 Apr 2023; if on/after 1 Apr 2023 use row 6.
6 Debt / Specified MF acquired on or after 1 Apr 2023 — §50AA deemed STCG N/A deemed STCG Always deemed STCG regardless of holding period Not available Slab rate §50AA No Yes — slab-rate tax eligible for §87A §50AA Applies to specified MFs acquired on/after 1 Apr 2023. AY 2026-27 revised definition: a specified MF invests more than 65% in debt and money-market instruments, OR 65%+ in units of a qualifying fund that itself invests 65%+ in debt/money-market. No LTCG path exists under current law.
7 Market-Linked Debentures (MLD) — §50AA deemed STCG N/A deemed STCG Always deemed STCG regardless of holding period Not available Slab rate §50AA No Yes — slab-rate tax eligible for §87A §50AA Covers both listed and unlisted MLDs; deemed-STCG since Finance Act 2023 (1 Apr 2023).
8 Gold — Physical (jewelry, coins, bars) >24 strictly Held ≤24 months Held >24 months Slab rate 12.5%, no indexation §112 No STCG yes. LTCG §112 — No. §112 No indexation post 23 Jul 2024. No reinvestment exemption (§54 covers property only). Inherited gold: holding period counted from original owner's acquisition date.
9 Gold ETF (Exchange Traded Fund) >12 strictly Held ≤12 months Held >12 months Slab rate 12.5%, no indexation §112 No STCG yes. LTCG §112 — No. §112 Listed security — 12-month holding period applies for LTCG classification.
10 Gold Mutual Fund (Fund of Funds investing in Gold ETFs) >24 strictly Held ≤24 months Held >24 months Slab rate 12.5%, no indexation §112 No STCG yes. LTCG §112 — No. §112 This row applies for units acquired before 1 Apr 2023. For Gold MF acquired on/after 1 Apr 2023 that meets the §50AA definition (more than 65% in debt/money-market instruments), §50AA deemed-STCG applies (row 6) — confirm the fund's composition with the fund house before filing.
11 Residential Property (house, flat, land) >24 strictly Held ≤24 months Held >24 months Slab rate 12.5% no indexation; or 20% with CII indexation if acquired before 23 Jul 2024 — lower of the two applies (Individuals/HUF only) Yes — if acquired before 23 Jul 2024 and taxpayer is Individual/HUF. CII 2025-26 = 376. STCG yes. LTCG §112 — No. §112 (Finance Act 2024 proviso) Indexation option only for Individuals/HUF; not for companies or firms. Reinvestment exemptions computed per entered investment amount; see §54/54EC/54F rows.
12 Commercial Property (office, shop, warehouse) >24 strictly Held ≤24 months Held >24 months Slab rate 12.5% no indexation; or 20% with CII indexation if acquired before 23 Jul 2024 — lower of the two applies (Individuals/HUF only) Yes — if acquired before 23 Jul 2024 and taxpayer is Individual/HUF. CII 2025-26 = 376. STCG yes. LTCG §112 — No. §112 (Finance Act 2024 proviso) §54 residential-property exemption does not apply to commercial property sales; §54EC (NHAI/REC bonds, capped ₹50L) may be available. Reinvestment exemptions computed per entered investment amount; see §54/54EC/54F rows.
13 Foreign Equity (shares listed on foreign stock exchanges) >24 strictly Held ≤24 months Held >24 months Slab rate 12.5%, no indexation §112 No STCG yes. LTCG §112 — No. §112 24-month threshold (not 12 months). §111A and §112A do not apply — those require STT on a recognised Indian exchange. Foreign equity gains taxed under §112 as unlisted / non-STT assets.
14 Sovereign Gold Bond — Maturity / RBI-Window Redemption (§47(viic) exempt) N/A exempt N/A — not a taxable transfer Fully exempt — no capital gains arise Exempt §47(viic) No No — no tax arises §47(viic) Exemption applies only to redemption through RBI / SBI-facilitated window (maturity or RBI-notified premature window after 5 years). Exchange-traded sale is a separate taxable event — see row 16. SGB coupon interest remains taxable as income from other sources in all cases.
15 Sovereign Gold Bond — RBI Premature Redemption (after 5th year, on coupon dates) N/A exempt N/A — not a taxable transfer Exempt for individual taxpayer §47(viic) Exempt §47(viic) No No — no tax arises (individual) §47(viic) RBI-permitted premature redemption (available after the 5th year on coupon dates) is exempt for an individual taxpayer under §47(viic). HUF / other taxpayers do not get the automatic exemption — consult a tax professional. Coupon interest separately taxable as income from other sources.
16 Sovereign Gold Bond — Secondary-Market Sale (BSE/NSE) >12 strictly Held ≤12 months Held >12 months Slab rate 12.5%, no indexation §112 No STCG yes. LTCG §112 — No. §112 Sale on BSE/NSE is a taxable transfer regardless of maturity date; §47(viic) exemption does not apply to exchange transactions. Holding period measured from original issue/purchase date. Coupon interest separately taxable.
17 Virtual Digital Assets / Cryptocurrency (§115BBH) N/A flat rate Always taxed at flat 30% regardless of holding period No LTCG / STCG distinction — flat rate applies throughout 30% flat §115BBH 30% flat §115BBH No New regime: No (Chapter XII exclusion via §115BAC). Old regime: rebatable subject to ₹12,500 cap / ₹5L ceiling — judgment call, see §87A disclaimer above. §115BBH Only cost of acquisition is deductible; no other deduction permitted. Losses from one VDA cannot be set off against gains from another VDA. TDS u/s 194S at 1% on transactions above ₹10,000 (₹50,000 for specified persons).

The §87A position is regime-specific (a single, consistent rule across all Finin2min calculators):

RegimeExcluded from §87AIncluded in §87A
New Regime (§115BAC)§111A, §112, §112A, §115BBH (VDA) — all Chapter XII special-rate income, via the first proviso to §115BACSlab-rate income only
Old Regime§112A (its own proviso in §112A(1)); §115BBH VDA (excluded under both regimes — conservative position)Slab-rate income plus §111A and §112 — no enacted provision excludes these from the old-regime rebate

The rebate is capped at the rebatable tax before cess (₹12,500 old / up to ₹60,000 new) and can never produce a negative figure. The additional capital-gains tax displayed is a full differential liability — total tax (including surcharge and cess) with the entered gains minus total tax on other income alone — so it is exactly ₹0 when there are no capital gains, and any §87A rebate lost when the gains push total income past the rebate ceiling is correctly reflected.

Rows 4, 6, and 7 are subject to §50AA deemed-STCG treatment. Profits from these instruments are always taxed at slab rates as if short-term — irrespective of actual holding period. No holding period test is applied by this calculator for these asset types.

For residential and commercial property (rows 11–12) acquired before 23 July 2024, individuals and HUFs may choose the lower of: (a) 12.5% on nominal gain (cost unadjusted), or (b) 20% on CII-indexed gain. The calculator computes both and applies the lower tax automatically. This option is not available to companies, firms, or LLPs, and does not extend to any other asset class. CII for FY 2025-26: 376.

For listed equity shares and equity mutual fund units acquired before 1 February 2018, the cost of acquisition for LTCG purposes is the higher of: (a) actual cost, or (b) the lower of FMV on 31 January 2018 and the full sale consideration. This grandfathering was introduced by Finance Act 2018 and continues under §112A. The calculator detects pre-Feb-2018 acquisition dates but does not auto-look up FMV — the user must enter the grandfathered cost figure.

The 15% surcharge cap applies to the income taxed under §111A, §112 and §112A (this calculator treats the indexed-20% §112 land/building option within the same capped bucket), regardless of total income — even where total income would otherwise attract 25%/37% surcharge. Ordinary slab income and §115BBH (VDA) bear the full applicable surcharge rate. Marginal relief is applied at each threshold as described in the Income Tax Calculator methodology above.

Approximation disclosure (mixed-income marginal relief): Where capital gains and ordinary income are combined, true threshold recomputation for surcharge marginal relief is not strictly determinable without the exact income mix at the threshold. The calculator scales the entered income mix proportionally down to the threshold (preserving the relative mix). This is a faithful, conservative approximation; for total income near a surcharge threshold (₹50L / ₹1Cr / ₹2Cr / ₹5Cr) the surcharge figure should be treated as indicative and a professional consulted.

Sections 45, 47(viic), 48, 50AA, 54, 54EC, 54F, 111A, 112, 112A, 115BBH of the Income Tax Act 1961 · Finance (No. 2) Act 2024 · Finance Act 2025 · Finance Act 2023 (§50AA insertion) · CBDT notification on CII for FY 2025-26 (CII = 376) · CBDT FAQs on Capital Gains (July 2024)

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Buy vs Rent Calculator
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Uses a Net Present Value (NPV) framework to compare 10-year total cost of buying vs renting, discounted at the opportunity cost rate (default: 10–12%).

  • Down payment (opportunity cost of locking capital)
  • Home loan EMI (principal + interest, reducing balance)
  • Property tax (~0.1–0.5% of property value annually, varies by city)
  • Maintenance and society charges
  • Stamp duty and registration (5–7% of property value, varies by state)
  • Property appreciation (assumed CAGR — user-adjustable)
  • Annual rent with assumed annual increase (default 5%)
  • Investment return on saved down payment at opportunity cost rate
Price-to-Rent Ratio = Property Value ÷ Annual Rent Below 15 → Lean towards buying 15 – 20 → Neutral — model both scenarios Above 20 → Lean towards renting
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Lease vs Buy Calculator
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Compares 5-year Total Cost of Ownership (TCO) of an operating lease vs outright purchase (with/without auto loan), on an after-tax basis.

  • Monthly lease rental × tenure
  • Tax deductibility: lease rentals are typically deductible as a business expense for companies and self-employed individuals (subject to conditions)
  • Residual value / buyback obligation if applicable
  • On-road price (ex-showroom + registration + insurance + accessories)
  • Depreciation: this calculator computes a WDV income-tax depreciation shield for business/professional use only — it does not apply to a vehicle held purely for personal use, since personal-use depreciation is an economic assumption, not an automatic income-tax deduction. For business or professional use, the rate depends on the vehicle category and actual use: motor cars not used in the business of running vehicles on hire generally fall under the 15% WDV block; vehicles used in the business of running them on hire (e.g. taxis, rental fleets) may qualify for the 30% WDV block. Mixed personal/business use may require apportionment — this calculator does not model partial business-use apportionment and assumes full business use when a depreciation rate is selected.
  • Running and maintenance costs
  • Resale value at end of holding period
  • Income-tax depreciation rates: Income-tax Rules, 1962 — Rule 5 read with New Appendix I (Part A, Block of Assets: Plant & Machinery — Motor Cars). This is distinct from Schedule II of the Companies Act, 2013, which governs accounting/book depreciation (useful-life basis), not income-tax depreciation.
  • Last reviewed: June 2026. Always verify current rates with a qualified Chartered Accountant, as depreciation blocks can be amended by the Finance Act.
EV Cost Calculator
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5-year Total Cost of Ownership comparison between an EV and a petrol equivalent. Inputs: vehicle price, fuel/electricity cost, efficiency, insurance, maintenance, and battery replacement probability.

  • Average electricity cost: ₹7–9/unit (home charging); ₹14–18/unit (public fast charging)
  • Petrol price: user-adjustable, default ₹105/litre
  • EV efficiency default: 6–7 km/kWh (varies by vehicle class)
  • Battery replacement: not assumed within 5 years for vehicles with 8-year OEM warranty; flagged as a scenario for older vehicles
  • FAME II subsidy: retained for commercial EVs; personal vehicle subsidies largely phased out — reflected in default pricing
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Credit Card Rewards Optimiser
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Ranks Indian credit cards by net realised reward value for a user's actual spend pattern — cashback/points earned, milestone benefits, fees and non-cash benefits, all net of redemption probability and known caps/exclusions. This replaces an earlier "Credit Card Interest Calculator" methodology that no longer matched the tool; the live calculator is a rewards-optimisation engine, not a revolving-interest calculator.

  • 32 cards in the dataset (25 from the original calculator roster + 7 added for category coverage), each carrying a sourceMeta record: confidence level, official source link(s), extraction date and a "Human QA pending" badge until a named human reviewer signs off against the issuer's current terms.
  • 8 of the 32 cards are intentionally disabled from ranking (recommendationEnabled:false) pending official-source verification of current redemption value, fee, or milestone terms. Disabled cards are never silently re-enabled by user selection and never appear as the recommended "best card," even if a user explicitly selects one.
  • Every record's verifiedBy field truthfully states that extraction was OpenAI-assisted from official issuer sources, with independent human QA pending — it does not claim a human reviewer has signed off.
  • Detailed mode models spend across 25 granular categories (Amazon, Flipkart, Myntra, other online, grocery online/offline, Swiggy, Zomato, other restaurants, fuel, flights, hotels, travel portals, insurance, education, rent, tax/GST payment, professional/software, other government payment, wallet loads, UPI, international, general offline retail, and a dedicated EMI / converted-to-EMI purchases category, among others).
  • Quick mode offers a smaller, consolidated set of buckets including its own dedicated EMI field — EMI spend entered in either mode is tracked separately and is never folded into general/offline retail spend, since several issuers exclude EMI conversions from base earning and from milestone-qualifying spend.
  • Merchant- and channel-specific rules (e.g. Amazon-only vs. general online, Swiggy-only vs. general dining, fuel-brand-specific surcharge waivers) are matched on exact merchant/category identifiers — a card's Amazon-specific rate is never applied to Flipkart spend or vice versa.
  • Category-specific accelerated rates apply only where the issuer's own terms specify that category; spend outside an accelerated category earns the card's base rate, and spend in an issuer-excluded category (e.g. rent, wallet loads, government payments, fuel surcharge-only transactions, depending on the card) earns zero, not the base rate.
  • Caps are enforced at the policy-stated period (statement quarter, calendar quarter, monthly, or annual, per the card's own terms) and reset at the correct boundary — a quarterly cap is never computed as one-quarter of an annual figure.
  • Milestone benefits (points, vouchers, or a mix of both) are evaluated against the card's own qualifying-spend rule, including incremental-spend milestones (e.g. "₹X per additional ₹1 lakh spent") and exclusion lists (e.g. EMI/rent/petrol excluded from a specific card's milestone-qualifying spend).
  • A milestone's advertised face value (e.g. a ₹1,500 quarterly voucher) is always shown once the spend condition is met. Its realised value defaults to ₹0 and is never auto-included in the net-value ranking unless the issuer's record is explicitly flagged as a guaranteed cash-equivalent, or the user supplies their own expected redemption value through the calculator's voucher-valuation input. This applies uniformly to every voucher-type milestone, regardless of which dataset field originally carried the figure.
  • Point-denominated milestone rewards are pooled with regular earned points and are subject to the same user-selected redemption route and probability as the rest of the card's points balance.
  • Annual/renewal fees include GST unless the issuer's terms expressly state otherwise. Fee waivers tied to an annual spend threshold subtract issuer-excluded spend categories from qualifying spend before checking the threshold, the same way milestone exclusions are applied.
  • Non-cash benefits (airport lounge access, golf, memberships, etc.) are valued at ₹0 by default. A value is included only after the user explicitly marks the benefit as used and supplies their own expected usable value — usage and value are never assumed.
  • Cards are ranked by net realised value: realised reward value + realised non-cash benefit value + applicable milestone value − fees, computed independently of the display sort order, so changing the visible table's sort column never changes which card is flagged "Best Card."
  • A card whose earned points have no established ₹ redemption value, and for which the user has not supplied one, is excluded from "best card" selection and shown as "ranking pending redemption value" rather than being defaulted to ₹0 and silently ranked.
  • The 8 disabled cards (see Card Coverage above) are excluded from every ranking until their official terms are captured and reviewed — their absence from the "best card" result does not mean they are worse, only unverified.
  • Milestone benefit descriptions are partly free-text in the underlying dataset; a small number of milestones whose text does not resolve to a structured ₹ or points figure remain flagged "needs your valuation" rather than guessed.
  • This tool models reward economics only — it does not model revolving-balance interest, late-payment penal charges, or minimum-due calculations. Issuer terms, caps and milestone rules change; verify current terms directly with the issuer before relying on a ranking for a card application.
  • Dataset generated 27 June 2026 from official issuer-hosted terms/PDFs, issuer product pages and issuer rewards catalogues (in that priority order); secondary/unofficial sources are not used for ranking-affecting figures.
  • Regression-tested: the calculator carries an embedded automated test suite (exact-value assertions, not just pass/fail truthy checks) covering cap resets, quarterly-vs-annual milestone math, merchant/category isolation, fee waiver exclusions, EMI exclusion, voucher-vs-cash-equivalent treatment, and ranking stability under re-sorting. Currently passing in full at last review.
  • Reviewer: pending a named human reviewer (see Card Coverage above). Last reviewed: 27 June 2026. Next review: on next issuer terms change or quarterly, whichever is sooner.
  • Version notes: this methodology entry was rewritten to describe the actual rewards-optimisation engine; it previously described an unrelated revolving-interest calculator that this page never shipped.
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Salary Restructuring Calculator
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Compares your current CTC structure against a tax-optimised restructuring, computing take-home pay under both the Old and New tax regimes (AY 2026-27, Finance Act 2025). The full formula reference is also available in-app via the "Calculation Assumptions & Methodology" panel on the calculator page.

Uses the same New/Old regime slabs, Section 87A rebate, surcharge and Health & Education Cess rules as the Income Tax Calculator above.

HRA exempt = MIN of: (a) Actual HRA received from employer (b) 50% of basic salary (Metro) or 40% (Non-Metro) (c) Annual rent paid − 10% of annual basic salary Metro cities (Rule 2A): Delhi, Mumbai, Kolkata, Chennai. Old regime only — HRA is fully taxable under the New regime.
  • Statutory PF: 12% × MIN(monthly basic, ₹15,000) × 12 — capped at ₹21,600/year (employee & employer each), per the EPF & MP Act 1952
  • Actual-basis PF: 12% of full annual basic salary (uncapped, if employer opts in)
  • Employer NPS (Section 80CCD(2)): up to 14% of basic salary, deductible in both regimes (Finance Act 2025)
  • Gratuity accrual: 4.81% of basic/year (15/26 × 1/12), Payment of Gratuity Act 1972, capped at ₹20 lakh
  • ESI: 0.75% employee + 3.25% employer of gross wages, applicable only if gross monthly salary ≤ ₹21,000 (ESI Act 1948)

Basic salary ₹50,000/month, HRA received ₹25,000/month, rent paid ₹30,000/month, Mumbai (metro):

(a) Actual HRA received = ₹25,000 × 12 = ₹3,00,000 (b) 50% of basic (metro) = 50% × ₹50,000 × 12 = ₹3,00,000 (c) Rent − 10% of basic = (₹30,000 × 12) − (10% × ₹50,000 × 12) = ₹3,60,000 − ₹60,000 = ₹3,00,000 HRA exempt = MIN(a, b, c) = ₹3,00,000 Statutory PF (basic > ₹15,000 ceiling): Employee PF = 12% × ₹15,000 × 12 = ₹21,600/year Employer PF = ₹21,600/year (same base)

Income Tax Act 1961 (Sections 10(13A), 16, 80CCD) · Finance Act 2025 · EPF & MP Act 1952 · ESI Act 1948 · Payment of Gratuity Act 1972 · PFRDA NPS regulations

⚖️
Compare Investments Toolkit
Open Calculator →

A multi-tool page for comparing financial instruments (equity, debt, gold, FD, real estate, crypto and more) and running quick planning calculations: SIP projection, Lumpsum vs SIP, Goal-based Corpus, and Emergency Fund sizing.

Uses the same compounding formula as the SIP Returns Calculator above: FV = P × [(1+r)ⁿ − 1] / r × (1+r), where r = monthly return and n = number of instalments.

Lumpsum Corpus = Amount × (1 + r)^years SIP Corpus = Monthly × [(1+rₘ)ⁿ − 1] / rₘ × (1+rₘ) Where r = annual return, rₘ = r/12 (monthly), n = years × 12 The tool reports whichever corpus is larger as the "winner" for the entered amount, rate and time horizon.
Inflation-adjusted goal = Goal × (1 + inflation%)^years Monthly SIP required = Goal ÷ [((1+rₘ)ⁿ − 1)/rₘ × (1+rₘ)] Lumpsum required today = Goal ÷ (1 + r)^years

Goal: ₹1,00,00,000 (₹1 crore) in 15 years, assumed return 12% p.a.:

rₘ = 12% / 12 = 0.01, n = 15 × 12 = 180 months (1.01)^180 ≈ 5.992 SIP factor = [(5.992 − 1) / 0.01] × 1.01 ≈ 504.2 Monthly SIP required = ₹1,00,00,000 / 504.2 ≈ ₹19,830/month
  • Base coverage: 3 months of expenses (stable job) · 6 months (moderate) · 12 months (variable/freelance income)
  • +1 month for some dependents, +3 months for many dependents
  • Recommended split: 40% liquid funds/sweep FD, 35% ultra-short funds, 25% short-duration FD

Historical drawdown and return ranges sourced from NSE, BSE, RBI and AMFI public data. Figures are indicative and do not predict future performance.

⚠️ Disclaimer: All calculations are illustrative and educational only. Results depend on assumptions that may differ from actual market conditions, tax rules, or individual circumstances. Calculator outputs do not constitute financial, tax, or legal advice. Consult a qualified professional for decisions specific to your situation.

Questions about our methodology? Email: hello@finin2min.com

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