What is an Assessment Year (AY)?

What is an Assessment Year?

The Assessment Year (AY) is the 12-month period from April 1 to March 31 of the following year, during which income earned in the previous financial year is assessed and taxed.

The logic is straightforward: you can’t be taxed on income before you’ve earned it. So income earned during a financial year gets assessed and taxed in the year that follows. The year you earn the income is the Financial Year (FY). The year it gets assessed is the Assessment Year.

Financial Year vs. Assessment Year

The two run consecutively. The Financial Year is when the income is earned. The Assessment Year is when that income is filed and taxed.

A concrete example: income earned between April 1, 2022 and March 31, 2023 belongs to FY 2022-23. Once that period ends, the Assessment Year begins: April 1, 2023 to March 31, 2024, which is AY 2023-24. That’s when you file your return for what you earned the year before.

Recent AY and FY pairings for reference:

April 1, 2023 to March 31, 2024 is FY 2023-24, assessed in AY 2024-25.
April 1, 2022 to March 31, 2023 is FY 2022-23, assessed in AY 2023-24.
April 1, 2021 to March 31, 2022 is FY 2021-22, assessed in AY 2022-23.

Filing taxes for the Assessment Year

The process involves several steps. Gather your income documents: salary slips, bank statements, investment proofs. Select the correct ITR form for your income type and category (ITR-1 through ITR-7). Create an account on the Income Tax e-filing portal if you don’t have one. Fill in your income and deduction details accurately, link your Aadhaar or PAN card, and calculate your tax liability.

For online filing, upload the completed ITR form to the portal. Complete verification through Aadhaar OTP, Electronic Verification Code (EVC), or by posting a signed ITR-V to the CPC in Bengaluru. Keep copies of your filed return, acknowledgment, and supporting documents.

Common mistakes to avoid

Most filing errors fall into predictable categories. Entering incorrect personal or financial details. Choosing the wrong ITR form. Leaving out income sources, even smaller ones. Mismatched TDS figures that don’t align with Form 26AS. Missing deductions you’re entitled to claim. Arithmetic errors in tax calculations. Failing to file returns for previous years where applicable. Filing late and incurring penalties. Skipping the return verification step, which leaves the filing incomplete. Not disclosing all bank accounts. Mismatched TAN and PAN details. And failing to review the full return before submitting.

FAQs

What happens if I miss the Assessment Year deadline?
Late filing triggers fees and interest on unpaid tax. You may also lose certain deductions that aren’t available after the deadline passes. Refunds get delayed, and in serious cases there can be legal consequences. Filing on time is straightforward to avoid all of this.

Can I revise my return after the Assessment Year ends?
Yes, with limits. If you filed on time, you can submit a revised return under Section 139(5) of the Income Tax Act within one year of the Assessment Year ending.

Why does the ITR form ask for the Assessment Year?
The AY tells both the taxpayer and the tax authority exactly which income period is being assessed. Without it, there’s no way to align the return to the correct financial year, which creates problems for calculation, compliance, and enforcement.