Section 159 - Agreement with foreign countries or specified territories and adoption by Central Government of agreement between specified associations for double taxation relief
Section 159 is the treaty gateway. A notified agreement may grant relief, allocate taxing rights, exchange information and assist recovery. For a covered assessee, the more beneficial rule generally applies, but Chapter XI anti-avoidance provisions apply even if less beneficial. A non-resident claimant needs a tax-residency certificate and Form 41 information.
Reviewed by CA Nikhil Gupta · Updated 9 October 2026
Current law and effective date
Section 159 is controlled against the consolidated Income-tax Act, 2025 as amended by the Finance Act, 2026. The Act and Income-tax Rules, 2026 operate from 1 April 2026; earlier years and saved proceedings require the repeal-and-savings framework rather than automatic migration.
Primary statute: Income Tax Department consolidated Act | Rules: Notified Income-tax Rules, 2026
2-minute decode
Section 159 is the treaty gateway. A notified agreement may grant relief, allocate taxing rights, exchange information and assist recovery. For a covered assessee, the more beneficial rule generally applies, but Chapter XI anti-avoidance provisions apply even if less beneficial. A non-resident claimant needs a tax-residency certificate and Form 41 information.
Who should use this section
Residents and non-residents invoking a tax treaty, protocol, exchange-of-information or recovery-assistance provision under a notified international agreement.
Old-law bridge
Sections 90 and 90A
The old-law bridge is navigational, not automatic precedent transfer. Match the 1961 Act wording, saved proceedings, current 2025 Act text and effective date before importing an older interpretation.
Finance Act 2026 / current-law note
No section-specific Finance Act, 2026 textual substitution is separately flagged for section 159; the consolidated post-Finance-Act-2026 text remains the controlling version and must be used instead of pre-1 April 2026 extracts.
Professional alert
Read the current treaty, protocol, Multilateral Instrument position, notifications and domestic anti-abuse rules together. A most-favoured-nation clause or protocol benefit should not be assumed to operate automatically where a notification is legally required.
Connected Income-tax Rules, 2026 and Forms
Worked application
A treaty caps Indian tax on royalty at 10%, while the Act rate is higher. If treaty eligibility, beneficial ownership and documentation are satisfied, the treaty cap may apply. If the Act imposes no tax at all, the treaty cannot create a charge.
Evidence / compliance checklist
- Preserve the primary agreement, certificate, account statement or transaction record that establishes the facts relevant to section 159 (Agreement with foreign countries or specified territories and adoption of association agreements).
- Reconcile the section 159 amount to books, return schedules and third-party evidence so the computation can be reproduced without relying on a narrative assertion.
- Keep the current-law source and any prescribed Rule/Form evidence with the tax-year file for section 159; do not rely on a legacy 1961 Act form merely because the section has an old-law bridge.
- Where section 159 contains a threshold, election or time limit, retain dated evidence proving that the condition was satisfied before the return or proceeding was finalised.
Common mistake
A common section 159 error is to apply the old-law label or headline rate without rebuilding the current statutory conditions. For “Agreement with foreign countries or specified territories and adoption of association agreements”, the safer control is to test the exact taxpayer/transaction facts, the operative tax year, every linked Rule/Form and the Finance Act 2026 consolidated wording. Read the current treaty, protocol, Multilateral Instrument position, notifications and domestic anti-abuse rules together. A most-favoured-nation clause or protocol benefit should not be assumed to operate automatically where a notification is legally required.
Recommended approach
For section 159, start with the legal trigger in “Agreement with foreign countries or specified territories and adoption of association agreements”, document the evidence for that trigger, then run the computation or procedural step against the current text. As a cross-check, verify this provision-specific checkpoint: Treaty benefit is subject to treaty eligibility, residence evidence and current anti-abuse rules.
Thresholds, periods and timing checkpoints
- Treaty benefit is subject to treaty eligibility, residence evidence and current anti-abuse rules.
- A non-resident treaty claimant must satisfy the prescribed residency-information requirements; treaty/protocol/MLI position must be checked for the relevant year.
Related provisions and interaction map
Section 159 interacts with the other sections 155-160, section 202 where the rebate regime is relevant, Rules 73-76 where treaty/FTC procedure applies, and the return/assessment provisions.
Current statutory text
Primary-source trail
Statute: Income-tax Act, 2025 as amended by Finance Act, 2026
Rules: Income-tax Rules, 2026
Law navigation: Income Tax Department 2025 Act / Rules hub
Quoting note: Use the official consolidated Act for verbatim legislative language.
FAQs
Does an old Income-tax Act, 1961 case automatically decide section 159?
No. The old-law bridge helps research, but transferability depends on materially matching language, transition rules and any Finance Act 2026 change.
Which text should be quoted in advice or litigation?
Quote the consolidated official statute for the relevant tax year. If this page presents a provision summary rather than complete statutory text, use the official consolidated Act for verbatim legislative language.