For decades, Indian taxpayers have had to perform a bit of mental gymnastics every tax season. You earn money in the Previous Year, but you file and pay for it in the Assessment Year. It was a dual-year system that often left people scratching their heads.

However, starting April 1, 2026, things are getting a lot simpler. With the introduction of the Income Tax Act 2025, the term "Assessment Year" (AY) is being retired in favor of a much more intuitive concept: the Tax Year.

What Exactly is a "Tax Year"?

Under the new Act, a Tax Year is a period of twelve months beginning on April 1st and ending on March 31st. Essentially, the "Tax Year" is a direct replacement for what we used to call the "Previous Year" (the Financial Year in which you actually earned the income).

Why the Change? Say Goodbye to Confusion

The primary reason for this shift is clarity. The dual-year reference was a frequent source of errors on tax forms and general confusion for the average citizen. By aligning the "Tax Year" with the actual "Financial Year," the government is removing the need to keep track of two different labels for what is essentially one cycle of income.

How will Income be Assessed Now?

A common question is: If we removed the "Assessment Year," does that mean we are assessed differently? The short answer is no. The timing of the assessment remains the same; only the terminology has changed. You earn your income during the Tax Year, and it will still be assessed after that year ends.