Free tool
RERA Possession Delay Interest Calculator
If a builder missed the possession date in your agreement, RERA Section 18 entitles you to interest on what you have paid. Estimate that figure below.
When a promoter fails to hand over possession by the date agreed in the sale agreement, Section 18 of the RERA Act gives the buyer a choice: withdraw and claim a refund with interest, or stay in the project and claim interest for every month of delay on the amount already paid. The interest runs at the prescribed rate — in most states, the State Bank of India’s highest MCLR plus two percent.
Enter the amount paid and the agreed possession date to see the estimated interest a delay would entitle you to.
This is a general-information estimate, not legal advice, and not a promise of recovery. It uses simple interest pro-rated by days; some Authority orders compute interest differently or apply a different rate. The interest actually payable is fixed by the RERA Authority on the facts of your case. Verify the current prescribed rate and your agreement terms before relying on any figure.
How the calculation works
The estimate uses simple interest pro-rated by the number of days between your agreed possession date and actual handover (or today, if possession is still pending):
- Principal — the total amount you have paid the builder so far.
- Rate — the prescribed rate, pre-filled at SBI highest MCLR (9.1%) plus 2% = 11.1% per year (rate as of 2026-07-09), editable for your state or order.
- Period — from the agreed possession date to actual possession, or to today if not yet delivered.
Some Authority orders compute interest with monthly rests or apply a different rate. The figure the Authority finally awards governs; treat this as a working estimate to understand the scale of your claim.
For the full method, the legal basis, and how to raise the claim with your state RERA, read the companion guide.
How RERA possession-delay interest is calculated →Common questions
How is RERA possession-delay interest calculated?
Under Section 18 of the RERA Act, a buyer who chooses to keep the flat is entitled to interest for every month of delay on the amount paid, at the prescribed rate. Most state RERA rules apply simple interest at the State Bank of India's highest MCLR plus two percent, pro-rated for the period between the agreed possession date and actual handover (or today, if still undelivered).
What is the prescribed rate of interest?
Most state RERA rules fix the prescribed rate at SBI's highest Marginal Cost of Funds based Lending Rate (MCLR) plus two percent. Some states and individual Authority orders apply a different figure, so the calculator lets you edit the rate.
Can I claim interest and still keep the flat?
Yes. Section 18 gives the buyer a choice: withdraw and claim a refund with interest, or continue in the project and claim interest for every month of delay until possession is handed over. This calculator estimates the second option.
Is this calculator legal advice?
No. It is a general-information estimate for buyers. The interest actually payable is determined by the RERA Authority on the facts of each case. For a specific opinion on your documents, consult a lawyer.
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