Four figures. You get the route, the credit each route recovers, what lapses anyway, and a two-page note for the Board.
| Assessment year | Credit, ₹ | Last usable |
|---|
Default: all blank, so the lump above is used. Credit from AY 2011-12 and earlier ended by tax year 2025-26 — leave it out. Confirm with your CA
Marginal relief is not worked out — near a surcharge line the true tax is slightly lower.
What changed on 1 April 2026. MAT is now 14% of book profit and final — it no longer builds credit. Credit you already have can be used only after you choose the 22% regime, and only up to 25% of each year's tax.
Frozen, not lost. While you stay in the old regime the credit cannot be used, but each year's credit lives to its 15th year. So a later switch may still use what is left — if the open reading of the CBDT FAQs is right.
The open point. FAQ Q.5(iii) reads as if only a switch in 2026-27 keeps the credit; Q.5(vi) and Q.12 say 2026-27 or later. This page shows the cost of waiting under both and picks neither. Confirm with your CA
Why some credit lapses even when you switch. The 25% cap can be smaller than the credit expiring that year; what the cap cannot reach dies at the end of its 15th year.
The write-down. Credit that cannot be used on the route the Board intends is the amount to write down (Ind AS 12 probability; for AS companies, the ICAI Guidance Note's convincing-evidence test). ICAI has issued nothing new on this since the Finance Act 2026 (checked ).
What this page does not do. It does not test whether you qualify for the 22% regime, compute book profit or total income, or model losses tied to the deductions you would give up.
Your answer
Type the MAT credit you carry to start.
| Route | Tax over 15 years | Credit used | Credit lapses | Difference vs best |
|---|
| Tax year | 22% tax | Credit used (cap) | Tax you pay | Credit left | Lapses this year |
|---|
Each year's credit is used oldest first, up to 25% of that year's tax.
Type the company and the firm name to print the note.