The 12-month period immediately following a Financial Year (FY) in which an individual's or company's income is formally assessed for tax.
- Category
- Compliance & Labor Law
- Legal status
- Governed by Indian law
- Relevant to
- HR, compliance & legal
- Reading time
- 3 min
What is Assessment Year (AY)?
In Indian tax law under the Income Tax Act, 1961, the Assessment Year (AY) is the financial year that comes immediately after the Previous Year (PY) or Financial Year (FY). The income earned between April 1 and March 31 of an FY is evaluated and taxed in the corresponding AY.
For example, income earned in FY 2024-25 is assessed and filed in AY 2025-26. From 1 April 2026 the Income-tax Act, 2025 replaces 'previous year' and 'assessment year' with a single 'tax year', the financial year in which the income is earned.
Key takeaways
- 1In Indian tax law under the Income Tax Act, 1961, the Assessment Year (AY) is the financial year that comes immediately after the Previous Year (PY) or Financial Year (FY).
- 2The income earned between April 1 and March 31 of an FY is evaluated and taxed in the corresponding AY.
- 3For example, income earned in FY 2024-25 is assessed and filed in AY 2025-26.
- 4From 1 April 2026 the Income-tax Act, 2025 replaces 'previous year' and 'assessment year' with a single 'tax year', the financial year in which the income is earned.
Why Assessment Year (AY) matters
Critical for payroll managers issuing Form 130 (Form 16) and for employees filing their annual Income Tax Returns (ITR).
How Assessment Year (AY) works in practice
- 1
Identify applicability
Check whether Assessment Year (AY) applies to your establishment based on headcount, location, industry and wage limits.
- 2
Register & configure
Complete the required registrations and set up Assessment Year (AY) rules and rates in your HR system.
- 3
File on time
Prepare returns, challans or intimations linked to Assessment Year (AY) before the due date to avoid penalties.
- 4
Maintain records
Keep registers, proofs and correspondence for Assessment Year (AY) ready for inspection.
Real-world example
An employee reviewing their annual tax deduction certificate notes 'FY 2024-2025' for earnings and 'AY 2025-2026' for tax assessment.
Indian statutory reference
Income Tax Act, 1961, section 2(9), for income up to 31 March 2026. The Income-tax Act, 2025, in force from 1 April 2026, uses 'tax year' instead.
Rates, limits and state rules change often. Confirm against the latest notification or with your compliance advisor.
Best practices and common mistakes
Best practices
- Maintain a compliance calendar with every due date related to Assessment Year (AY).
- Track state-wise differences, since many labour rules vary by state.
- Keep statutory registers up to date and digitally accessible.
- Review circulars and notifications at least quarterly.
- Assign one clear owner for each filing.
Common mistakes
- Assuming Assessment Year (AY) does not apply because of a small headcount without verifying the threshold.
- Missing due dates, which attracts interest, late fees or prosecution.
- Applying central rules while ignoring state-specific amendments.
- Not retaining proof of filing or employee acknowledgements.
Managing Assessment Year (AY) in SleetHR
SleetHR keeps statutory rules for Assessment Year (AY) up to date, alerts you before due dates, and produces the registers and returns inspectors ask for.