You needed ₹5,000 before salary day, an app approved it in minutes, and the interest looked small. Then the money that landed was less than ₹5,000, the due date came fast, and an “extension” option appeared. This is how a small loan quietly becomes an expensive one.
Short answer: With an instant loan app, the interest rate is often the smallest part of the cost. Processing fees with GST are usually deducted upfront, so you receive less than you borrow, and extension or late fees can repeat every cycle. In our illustrative example, a ₹5,000 loan costs about 204% a year even when repaid on time, and if it is rolled over for about 11 months, the borrower ends up paying more than ₹15,000.
Step 1: what you actually receive
All numbers below are an illustrative example, not any particular app’s pricing. Real fees vary widely, which is why you must check the Key Fact Statement (KFS).
Rahul, 26, Nagpur, borrows ₹5,000 for 30 days. The app charges:
- A processing fee of 10% (₹500), plus 18% GST (₹90), deducted upfront.
- Interest of 0.1% a day on ₹5,000, which is ₹5 a day, or ₹150 for 30 days.
So Rahul receives ₹5,000 − ₹590 = ₹4,410, and must repay ₹5,000 + ₹150 = ₹5,150 on day 30.
His cost is ₹5,150 − ₹4,410 = ₹740 for using ₹4,410 for one month. That is about 16.8% for the month.
Step 2: why the APR matters more than the “interest rate”
The app might advertise “0.1% per day”. That sounds tiny. But the fee changes everything.
A simple way to annualise Rahul’s cost: (₹740 ÷ ₹4,410) × (365 ÷ 30) = about 204% a year. The interest alone would be about 36% a year (0.1% × 365), but the upfront fee pushes the true cost much higher.
This is why RBI’s Digital Lending Directions (2025) require a KFS before you sign, showing the APR (the all-in yearly cost including fees) and the total amount payable. Lenders calculate APR in a standard way, so the KFS figure may differ slightly from this simple estimate, but it will tell the same story. Our guide to APR vs interest rate explains how to read it.
Step 3: the extension cycle
On day 30, rent and bills leave Rahul short. He cannot pay ₹5,150. The app offers a 30-day extension if he pays the interest plus an extension fee. In this example:
- Interest for the period: ₹150
- Extension fee: 15% of ₹5,000 = ₹750, plus GST of ₹135
- Payment to extend: ₹1,035
His principal is still ₹5,000. He has only bought time.
On day 60 he misses the date by five days. A late fee of ₹50 a day plus GST adds ₹295, and five more days of interest add ₹25. He then pays another ₹1,035 to extend again. On day 95 he extends a third time.
| Point in time (example) | What Rahul pays | Running total paid | Still owes |
|---|---|---|---|
| Day 0 | Receives ₹4,410 (₹590 fee deducted) | ₹0 | ₹5,000 |
| Day 30: first extension | ₹1,035 | ₹1,035 | ₹5,000 |
| Day 65: late by 5 days, then extends | ₹295 late fee + ₹25 interest + ₹1,035 | ₹2,390 | ₹5,000 |
| Day 95: third extension | ₹1,035 | ₹3,425 | ₹5,000 |
| Day 125: repays in full | ₹5,150 | ₹8,575 | ₹0 |
After three cycles, Rahul has paid ₹8,575 to get ₹4,410. That is ₹4,165 more than he ever received.
Step 4: how it reaches ₹15,000
If his cash gap does not close, the pattern continues. Each month he pays ₹1,035 just to keep the same ₹5,000 loan alive.
With 10 extensions and the one late payment, he has paid ₹10,670 before he repays anything of the principal. Closing the loan at about month 11 adds ₹5,150. Total paid: ₹15,820, for a loan that put ₹4,410 in his account.
The arithmetic: (10 × ₹1,035) + ₹295 + ₹25 + ₹5,150 = ₹15,820.
Many borrowers do something even riskier: they take a second app loan to repay the first. Because each new loan also has fees deducted upfront, they need to borrow more each time just to stand still. That is how one app loan becomes five, as we explain in loan stacking.
What this means for you
- The fee is the trap, not the daily rate. On a short loan, a 10% upfront fee costs far more than the interest.
- Extensions do not reduce what you owe. They only push the date, at a price.
- Compare total repayment, not EMI or daily rate. The KFS shows the total amount payable. If an app does not give you a KFS, do not borrow from it.
- Know who is lending. Every app should name the RBI-regulated bank or NBFC behind it. Check it in our loan app directory.
- Use the cooling-off period if you change your mind. Digital loans have a look-up period, at least one day, during which you can exit by repaying the principal and proportionate APR, without a penalty.
If you are already in the cycle
First, stop new borrowing. Then list every app loan with its outstanding amount, due date and the total you would pay to close it. Our guide on getting out of several loan apps and our pillar on an honest way out of high-interest app loans walk through the options.
Be realistic about consolidation. A consolidation loan for someone with several app loans may not carry a low interest rate, and it is not guaranteed to cost less. Its honest benefits are one EMI and one date, a longer tenure that lowers the monthly outgo, an end to the borrow-to-repay cycle, closing accounts cleanly and starting to rebuild your CIBIL score. Always compare the total repayment in the KFS before and after. Our checklist on app loan consolidation explains what to check.
Paying extension fees every month? See whether one EMI could end the cycle, and compare the total cost first.
If recovery calls have turned abusive, remember that RBI rules prohibit harassment, threats and contacting your family or friends to shame you, and calls are restricted to between 8 am and 7 pm. Read your rights against loan app harassment.
Check before you apply
- The APR and total amount payable in the Key Fact Statement (KFS), compared with what you pay today
- Processing fee plus 18% GST, and any insurance or add-ons (ask whether they are optional)
- Foreclosure charges on your existing loans and on the new loan
- That the new loan covers every debt you plan to close, and that you will get a closure letter or NOC for each
- Whether the new EMI fits your monthly budget after essentials and savings
- That the lender is RBI-regulated: check our lender directory and loan app directory
Frequently asked questions
How much interest do instant loan apps charge?
It varies widely by lender and loan. The bigger issue is that processing fees, GST and extension or late charges often cost more than the interest itself. Look at the APR and the total amount payable in the KFS, not the daily or monthly rate.
Why did I receive less money than my loan amount?
Many apps deduct the processing fee and GST from the loan before paying you. You still repay the full loan amount plus interest, so your real cost is higher than the headline rate suggests.
Is it better to extend an app loan or take another loan to repay it?
Neither is a good long-term fix. Extensions keep the full principal outstanding at a fee each cycle, and borrowing to repay usually means larger loans with more fees. If you cannot repay, talk to the lender early and look at a plan to close all app loans together.
What is a good APR for a personal loan?
There is no single number, because rates depend on your profile and the lender. The useful habit is to compare the APR and total repayment of every offer side by side, using the KFS, before you sign.
Disclosure: FundsTiger (Gatimaan Finance Advisors Pvt. Ltd.) is a loan marketplace and lending service provider for RBI-regulated lenders. Aparampaar Finance Pvt. Ltd. (Omozing), one of those lenders, is a related party of FundsTiger. This article is general information, not financial advice. Read your loan agreement and KFS before you decide.