Home Loan OD Calculator.

A Home Loan OD is a special home loan product where your loan account is linked to a current or savings account. Any surplus funds you park in this linked account reduce your outstanding loan balance on a daily basis, which directly lowers the interest charged for that day.

Home loan interest is calculated on the daily outstanding principal. When you deposit money into your OD-linked account, it effectively reduces the principal for that day. You still keep access to those funds, but every day they sit in the account saves you that day's interest. Over the loan tenure, even ₹1–2 lakh parked consistently can save several lakhs in interest.

No — and this is the most common misunderstanding about OD home loans. Your monthly instalment stays exactly the same. What changes is what happens inside it: less of each instalment is swallowed by interest, so more of it goes towards repaying the loan. The benefit reaches you as a loan that ends years early, not as a smaller monthly payment. On a ₹50 lakh loan at 7.5% over 20 years, keeping ₹10 lakh parked throughout clears the loan almost five years ahead of schedule while the EMI never moves.

Yes. The key advantage over a prepayment is flexibility — you can withdraw the parked funds anytime for emergencies or other expenses. When you withdraw, the effective principal goes back up and interest resumes on the higher balance.

With most OD home loans, no. The balance you keep in the account earns no savings interest — you will not see interest credited to you each quarter, and the balance is not treated like an ordinary savings deposit. Its only job is to reduce the amount the lender charges you interest on. In practice that is the better arrangement: on a loan at 7.5% you are effectively getting 7.5% by not paying it, against the 2.5–3% a savings account pays. It is also cleaner on tax, because savings and fixed deposit interest is taxable income, while interest you simply never pay is not. The one thing to watch is that a few lenders structure the product differently, so confirm with yours whether the parked balance earns anything.

Typically yes — the interest rate on an OD home loan may be marginally higher than a standard home loan from the same lender. Whether the OD is beneficial depends on how consistently you can keep a surplus parked. If you plan to leave a significant amount idle for long periods, the interest savings generally outweigh the rate difference. The calculator shows the break-even: the smallest balance you would need to keep parked for the OD to cost no more than a plain loan.

It works best for salaried professionals who receive a monthly salary and can leave it in the OD account until needed, business owners with seasonal cash surpluses, and anyone with a variable income who occasionally holds large amounts in savings. It is less useful if you spend your salary immediately each month.

If you already have an OD home loan, park it. With a fixed EMI, a rupee parked in the OD account and a rupee prepaid off the loan save exactly the same interest, month for month. The parked rupee can still be withdrawn; the prepaid one cannot. So prepaying into an OD gives up your flexibility and gets nothing back for it. The calculator lets you mark a deposit as a locked prepayment to see this — the interest saving does not change.

A prepayment permanently reduces the principal — you cannot get that money back without taking a new loan. An OD deposit achieves the same interest saving while the money is parked, but the funds remain accessible. The tradeoff is that you need the discipline to actually keep the money in the account.