Direct Tax Laws & International Taxation · Double Taxation Relief

Bilateral Relief under Tax Treaties (DTAA) for CA Final

Updated 5 October 2026 · Fact-checked

Bilateral relief is relief under a Double Taxation Avoidance Agreement between India and another country. For a taxpayer covered by the treaty, the Act applies only to the extent it is more beneficial than the treaty. To solve a question, confirm treaty coverage, classify the income, compare treaty and domestic treatment, check the TRC and documents, then apply the better result.

Understand Bilateral Relief under Tax Treaties (DTAA)

Double taxation arises when two countries tax the same income of the same person. One may tax on residence, the other on source. A DTAA is a treaty between two countries that divides taxing rights, so the same income is not taxed in full twice.

India enters into these agreements with other countries. The Income-tax Act, 2025 has a provision that gives effect to them. Follow the Act and the tax year that ICAI has announced as applicable for your attempt, and cite the 2025 Act in your answers.

Where an agreement applies to the taxpayer, the provisions of the Act apply to the extent they are more beneficial to the taxpayer than the treaty. In practice, the taxpayer gets the better of the two results. If the treaty is silent on a particular income, the provisions of the Act govern that income.

GAAR is not part of this rule. It applies under its own chapter of the Act, and it can deny a treaty benefit where the arrangement is an impermissible avoidance arrangement.

A treaty does not create a tax charge. The charge always comes from domestic law. The treaty only limits or removes India's right to tax. So first ask whether the income is taxable under the Act. Then ask whether the treaty restricts it.

To claim a treaty benefit, a non-resident must be a resident of the other contracting country. The usual proof is a Tax Residency Certificate (TRC) issued by that country's tax authority, along with the prescribed information in the prescribed form. The TRC is necessary but not always enough. The government can ask for more documents. Anti-avoidance rules, such as the Principal Purpose Test under the MLI and GAAR, can still deny the benefit.

Treaty relief works in two ways. One is exemption: the income is taxed only in one country. The other is a reduced rate: the source country taxes at a capped rate, and the residence country gives credit. This page covers the treaty route. Unilateral relief, where no treaty exists, is a separate topic.

Key rules to remember

More beneficial provision rule: Act's provisions apply to the extent they are more beneficial to the assessee than the DTAA; in application, compare income by income; Applies where India has a treaty with the other country and the person is eligible. GAAR operates under its own chapter and can override this. In numerical questions, comparing the tax under each income item (and taking the lower) is a working shortcut, not statutory wording.
Treaty does not create a charge: Taxable only if (charged under the Act) AND (not taken away by the treaty); If the Act does not tax the income, the treaty cannot make it taxable.
Treaty benefit conditions: Treaty benefit = Treaty covers the person + TRC and prescribed information + no treaty abuse; A TRC alone does not guarantee the benefit if anti-avoidance rules apply.
Treaty rate on withholding: TDS = Gross payment × treaty rate (if lower than domestic rate); The payer deducts at the lower rate only if the payee supplies the documents. Surcharge and cess treatment must follow the question's assumption.
Anti-avoidance override: GAAR can apply even if the treaty is more beneficial; A tax benefit from an impermissible avoidance arrangement can be denied despite the treaty.

How to solve Bilateral Relief under Tax Treaties (DTAA) questions

Use this order for any DTAA question. It keeps your answer in the provision, facts, conclusion form.

1Identify the taxpayer's residence and check that India has a DTAA with that country. If there is none, treaty relief is not available and you move to unilateral relief.
2Classify the income as business profits, royalty, fees for technical services, interest, dividend, capital gains and so on. Treaty articles are income-specific.
3Work out the tax under the domestic law first: whether the income is taxable in India and at what rate.
4Apply the treaty: is India allowed to tax the income at all, and is its right capped at a rate? For business profits, check whether a permanent establishment exists.
5Compare the two positions. The Act's provisions apply to the extent they are more beneficial to the assessee than the treaty, so the result is the better of the two for the income. Do this income by income in your working, since treaty articles are income-specific. In numerical questions, comparing the tax figures is a handy shortcut.
6Check the conditions: TRC, the prescribed information, and any treaty limits such as beneficial ownership or a principal purpose test. State clearly what happens if the documents are missing.
7Write the conclusion with the final tax figure. Add any anti-avoidance caveat in one line.

Quickest way: Two-column comparison

When to use it: Use it for numerical or case questions where the payment and both rates are given and time is short.

Draw two columns: Act and DTAA.
Write the rate or taxability for the income in each column.
Compute the tax in both and circle the lower figure.
Tick the TRC and documents. If missing, fall back to the Act column.
Write one line of reasoning and the final answer.

Common mistakes in Bilateral Relief under Tax Treaties (DTAA)

Applying the treaty rate automatically without comparing it with the Act
Students assume a treaty always gives relief.
Fix: Always compare the two positions and apply the one that is more beneficial. Subject to anti-avoidance rules, the treaty never worsens the position.
Treating the treaty as a charging provision
Students read the article and conclude the income is taxable in India.
Fix: Check the Act first. If the Act does not charge the income, the treaty cannot create a charge.
Ignoring the TRC and prescribed documents
Students focus on the rate and forget the conditions.
Fix: State that the benefit depends on a valid TRC and the prescribed information. Without them, the payer deducts at the domestic rate.
Saying the TRC alone settles eligibility
The TRC is stressed in notes, so it looks like a complete test.
Fix: Say the TRC is necessary but the benefit can still be denied for treaty abuse, lack of beneficial ownership, or under GAAR or the MLI principal purpose test.
Applying one treaty or Act result to all income items
Students treat the choice as all-or-nothing.
Fix: Compare income by income in your working, as treaty articles are income-specific. For each income, the Act's provisions apply to the extent they are more beneficial than the treaty.
Confusing bilateral and unilateral relief
Both are called double taxation relief.
Fix: Bilateral applies only where a treaty exists with the other country. Unilateral is the fallback where there is no treaty.

Worked examples

Example 1

Alpha Ltd, a resident of Country X, receives royalty of ₹50,00,000 from an Indian company. India has a DTAA with X. Assume the domestic rate on royalty for a non-resident is 20% and the treaty rate is 10%. Alpha Ltd gives a valid TRC and the prescribed information. Ignore surcharge and cess. What tax is deducted?

Show the solution

Provision: where a treaty applies, the Act's provisions apply to the extent they are more beneficial to the assessee than the treaty. Alpha is a resident of a treaty country and has provided the TRC.
Tax under the Act: 20% × ₹50,00,000 = ₹10,00,000.
Tax under the treaty: 10% × ₹50,00,000 = ₹5,00,000.
Compare: the treaty gives lower tax, so it is more beneficial.
Conclusion: the payer deducts tax at the treaty rate.

Answer: Tax of ₹5,00,000 is deducted. If Alpha had not given the TRC and information, the domestic rate would apply and tax would be ₹10,00,000.

Example 2

Beta Inc, a resident of Country Y, provides consulting services to Indian clients from Y. It has no fixed place or agent in India. Its profit from India-sourced business is ₹80,00,000. The India-Y treaty taxes business profits in India only if there is a permanent establishment (PE). Beta holds a valid TRC. Is the profit taxable in India?

Show the solution

Domestic law: assume the Act would treat the income as taxable in India. This is the starting point.
Treaty: business profits are taxable in India only to the extent attributable to a PE in India.
Facts: no fixed place, no agent, so no PE in India.
Compare: the treaty removes India's right to tax, which is more beneficial than the Act.
Conditions: valid TRC held. Beta should claim the benefit and disclose it in the return where one is required.
Caveat: the benefit can still be denied if the arrangement is covered by anti-avoidance rules.

Answer: The ₹80,00,000 is not taxable in India because Beta has no PE and the treaty is more beneficial than the Act.

Exam tips

Write the rule in one line first: where a treaty applies, the Act's provisions apply to the extent they are more beneficial to the assessee than the treaty. Name the treaty-giving-effect provision of the Income-tax Act, 2025, and quote a section number only if you are certain of it. The one-line rule earns marks in almost every answer.
In numerical questions, show both computations side by side before choosing. The comparison is often what is marked.
State the TRC and documents condition explicitly in case scenarios. Check whether the facts say the certificate was given.
Use the question's assumptions on rates, surcharge and cess. Do not import rates from memory.
Add one line on anti-avoidance, GAAR or the MLI principal purpose test, when the facts suggest a treaty-shopping arrangement.

Practice questions from Double Taxation Relief

Bilateral Relief under Tax Treaties (DTAA): frequently asked questions

Does a DTAA always override the Income-tax Act?

No. Where a treaty applies, the Act's provisions apply to the extent they are more beneficial to the assessee than the treaty, so the taxpayer gets the better outcome. In numerical questions you can compare the tax both ways as a shortcut. Subject to anti-avoidance rules such as GAAR, the treaty cannot increase the tax.

How do I claim treaty benefit under a DTAA?

The non-resident must be a resident of the treaty country. They give the payer a Tax Residency Certificate and the prescribed information. The payer then deducts tax at the treaty rate if it is lower. The claim is also made in the return where one is required.

Is a Tax Residency Certificate enough to get DTAA benefit?

It is necessary but not always sufficient. The authorities can seek more documents. The benefit can also be denied for treaty abuse, lack of beneficial ownership, or under GAAR or the principal purpose test.

What is the difference between bilateral and unilateral relief?

Bilateral relief is given where India has a treaty with the other country. Unilateral relief is given under the Act where no treaty exists. Check for a treaty first, and use unilateral relief only if there is none.