Lesson 1 of 3 · 5 min
The interest-free window
Between a purchase and its due date sits a free loan of up to 50 days. One condition holds it free, and most of this course follows from that.
A credit card is a loan you re-take every month. Buy something today and the bank pays for it; you repay when the bill is due. Between purchase and due date sits the interest-free window — anywhere from about 20 to 50 days, depending on where in the billing cycle the purchase lands.
One billing cycle, one phone
1 June
The billing cycle opens.
10 June
You buy a ₹30,000 phone. No interest is running — yet.
30 June
Statement day. Total due: ₹30,000. Minimum due: ₹1,500.
18 July
Due date. Pay the full ₹30,000 and the loan cost nothing — 38 interest-free days.
18 July, if unpaid
Pay anything less than the full amount and interest is charged from each purchase date — and new purchases lose the window too.
Myth
“The interest-free period is unconditional — a card always gives you 45 days free.”
False
The window exists only while the previous bill was paid in full. Carry even ₹500 forward and RBI's card rules let the bank charge interest from the day of each purchase, old and new alike. The 'free' in interest-free is a reward for full payment, not a standing feature.
Quick check
You paid last month's bill in full. You buy earphones the day AFTER this month's statement is generated. When is that payment due?
Check yourself
1 / 3
Kabir asks
What has to be true for the interest-free window to be open at all?
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