Gold Loan Interest Calculation: Monthly, Bullet & EMI Math
Gold loan interest calculation made simple: daily interest, monthly vs bullet vs EMI costs, rebate slabs and APR, with a worked ₹1 lakh example at 12% a year.
In this article
Gold loan interest is usually calculated daily on the principal you still owe: principal × annual rate × days ÷ 365. At 12% a year, a ₹1 lakh gold loan costs about ₹1,000 a month, or ₹12,000 for a full year if you never reduce the principal. What changes your real cost is how you repay, whether you keep to the rebate window, and the fees that push up the APR.
The basic formula
Most banks and gold loan NBFCs work out interest like this:
Interest = Outstanding principal × Annual rate × Number of days ÷ 365
Some NBFCs use a 360-day year in their interest policy, which slightly raises the effective cost. Your Key Facts Statement (KFS) must show the rate, the method and the Annual Percentage Rate (APR).
Because interest runs daily, you pay only for the days you actually use the money. If you borrow ₹1,00,000 at 12% and close the loan after 45 days, the interest is:
₹1,00,000 × 12% × 45 ÷ 365 = ₹1,479
With a 360-day year it would be ₹1,500.
Three ways the same rate turns into different costs
Gold loans come with three common repayment structures. Here is the same ₹1,00,000 loan at 12% a year for 12 months:
| Repayment type | What you pay | Total interest |
|---|---|---|
| Monthly interest, principal at end | About ₹1,000 a month, then ₹1,00,000 at month 12 | ₹12,000 |
| Bullet (all at maturity, simple interest) | ₹1,12,000 at month 12 | ₹12,000 |
| Bullet, if unpaid interest compounds monthly | About ₹1,12,683 at month 12 | ₹12,683 |
| EMI (principal + interest monthly) | ₹8,885 a month for 12 months | ₹6,619 |
Why EMI costs less in rupees: with an EMI loan, each payment reduces the principal, so interest is charged on a smaller balance every month. The rate is the same; you just borrow less money on average. On a bullet or interest-only loan, the full ₹1 lakh stays outstanding for the whole year.
Compounding is not automatic. Whether unpaid interest is added to the principal depends on your loan agreement. RBI's penal charges rules, in force since January 2024, say penalties for default must be levied as penal charges and not added to the rate or compounded, but ordinary interest terms are set by the contract. Read the KFS line on overdue interest.
Rebate and slab schemes at NBFCs
Many NBFC gold loan schemes publish a high "sanction" rate with a rebate if you pay interest on time. A typical structure looks like this (illustrative, not any lender's actual scheme):
| When you pay interest | Effective rate |
|---|---|
| Within 30 days | 12% |
| 31 to 60 days | 18% |
| 61 to 90 days | 24% |
The catch: under many such policies, if you miss the window, the higher slab applies from the date of the loan, not just from the day you were late.
Example: you borrow ₹1,00,000 and plan to pay interest monthly at 12%. You forget and pay on day 45 instead. If the slab moves to 18% from day one, interest for 45 days becomes ₹1,00,000 × 18% × 45 ÷ 365 = ₹2,219, instead of ₹1,479 at 12%. That is ₹740 extra for a 15-day delay.
If you take a scheme like this, set a reminder or a standing instruction a few days before each due date.
How interest affects how much you can borrow
Interest does not just add to your cost. For bullet loans, it also cuts the amount you receive. Under RBI's Lending Against Gold and Silver Collateral Directions, 2025, which lenders had to adopt by 1 April 2026, the loan-to-value (LTV) limit on a bullet loan is checked on the total amount repayable at maturity: principal plus interest.
With the 85% LTV cap on loans up to ₹2.5 lakh, and gold valued at ₹1,00,000:
- EMI or interest-paying loan: up to ₹85,000 in hand.
- 12-month bullet at 12%: principal × 1.12 must stay within ₹85,000, so the maximum principal is about ₹75,893.
The higher the rate, the smaller the bullet loan you can take on the same gold. The gold loan guide covers the full LTV table and how gold is valued.
Fees and APR: the number to compare
The headline rate is not the full cost. Lenders may charge:
- Processing fee, often a percentage of the loan or a flat amount
- Valuation or appraisal fee
- Penal charges on overdue amounts
- Renewal fee if you roll over the loan
- Auction-related charges if it gets that far
RBI requires all charges, including assaying and auction charges, to be listed in the loan agreement and the KFS, along with the APR.
APR example: a ₹1,00,000 bullet loan for 12 months at 12% with a ₹1,000 processing fee. You receive ₹99,000 in effect and pay ₹13,000 in total cost (₹12,000 interest + ₹1,000 fee). APR ≈ ₹13,000 ÷ ₹99,000 = 13.1%. A fee matters more on a short loan: the same ₹1,000 fee on a 3-month loan pushes the annualised cost much higher.
For a wider look at how fees change the real cost of any loan, read loan APR and total borrowing cost.
Worked example: Ravi's 6-month need
Ravi needs ₹1,50,000 for about six months until a fixed deposit matures. Two offers, both illustrative:
- Bank A: 9.5% a year, monthly interest, ₹500 processing fee.
- NBFC B: 12% a year if interest is paid within 30 days, no processing fee.
Bank A, interest paid monthly for 6 months: Interest ≈ ₹1,50,000 × 9.5% × 182 ÷ 365 = ₹7,105. Add the ₹500 fee: total cost about ₹7,605.
NBFC B, interest paid on time: Interest ≈ ₹1,50,000 × 12% × 182 ÷ 365 = ₹8,975. Total cost about ₹8,975.
NBFC B, if Ravi misses one payment and the slab moves to 18% from day one: Interest ≈ ₹1,50,000 × 18% × 182 ÷ 365 = ₹13,463.
Bank A is cheaper here even with its fee, and the gap widens sharply if Ravi slips on NBFC B's rebate window. If Ravi could instead repay in instalments, he could use the EMI calculator to see how a 6-month EMI would lower his total interest further.
How to check your lender's calculation
- Ask for the interest statement showing principal, rate, days and interest for each period.
- Confirm the day count (365 or 360) and whether interest is calculated on daily balances.
- Check the date your rate changed, if you are on a slab scheme, and whether the higher rate was applied from loan start.
- Match payments you made against the statement, including part-payments that should reduce principal.
- Raise errors in writing with the branch or the lender's grievance officer. If unresolved within 30 days, you can complain to the RBI Integrated Ombudsman at cms.rbi.org.in.
Ways to reduce gold loan interest
- Borrow only what you need, not the maximum per gram offered.
- Pay interest monthly even on an interest-only scheme, to protect rebates.
- Prepay when you can. Interest is daily, so every part-payment cuts cost from the next day, subject to any foreclosure terms in your KFS.
- Choose EMI if your income is regular. Total interest is lower and the debt does not pile up at maturity.
- Compare APR, not the headline rate. If you are weighing other secured options, see personal loan vs gold loan vs loan against FD.
Key takeaways
- Gold loan interest is usually daily simple interest: principal × rate × days ÷ 365 (sometimes 360).
- At 12% a year, ₹1 lakh costs about ₹1,000 a month on an interest-only plan; an EMI loan costs less in total because the principal falls.
- NBFC rebate slabs can raise your rate from the loan start date if you miss a payment window.
- For bullet loans, interest counts toward the LTV cap, so higher rates mean a smaller loan on the same gold.
- Compare offers on APR from the Key Facts Statement, including processing and other fees.
Frequently asked questions
How is gold loan interest calculated?
Most lenders calculate gold loan interest daily on the outstanding principal: principal × annual rate × number of days ÷ 365 (some use 360). You then pay it monthly, at the end in a bullet, or as part of an EMI, depending on the scheme.
What is the monthly interest on a ₹1 lakh gold loan?
At 12% a year, a ₹1 lakh gold loan costs about ₹1,000 a month in interest if you pay interest only. At 9% it is about ₹750, and at 18% about ₹1,500. The exact figure depends on the days in the month and the lender's day-count method.
Is gold loan interest simple or compound?
Interest is usually simple interest on the principal while you pay it on time. If you do not pay interest for a long period, the loan agreement may allow unpaid interest to be added to the dues, so read the Key Facts Statement for how overdue interest is treated.
Why did my gold loan interest rate go up?
Many NBFC schemes offer a low rate only if you pay interest within a set window, such as 30 days. If you miss it, the rate can move to a higher slab, often from the date of the loan, not just from the missed date.
Does an EMI gold loan cost less interest than a bullet loan?
At the same rate, an EMI loan usually costs less total interest because the principal falls every month. A bullet loan keeps the full principal outstanding for the whole tenure, so the rupee interest is higher.
This article is for general education and is not personalised financial, tax or legal advice. Rates and rules are as of 21 Oct 2026; confirm current terms with your lender, AMC or a qualified adviser.
