Post Office RD Calculator

How the Post Office RD Calculator works

You deposit the same amount every month for 5 years, at 6.7% a year. The government sets small savings rates every quarter. This guide uses the rates the calculator uses, notified for Jul–Sep 2026.

Interest is compounded quarterly, so early deposits earn more than late ones. The calculator uses the official-style RD formula.

Interest is taxable as per your slab.

Formula

M = R × [(1 + i)^n − 1] ÷ [1 − (1 + i)^(−1/3)]

• R = monthly deposit
• i = yearly rate ÷ 400 (quarterly rate), so 6.7 ÷ 400 = 0.01675
• n = number of quarters, 20 for 5 years

Worked example: ₹5,000 a month for 5 years at 6.7%

1. Total deposited = ₹5,000 × 60 = ₹3,00,000.
2. Maturity value = ₹3,56,829.
3. Interest earned = ₹56,829.

Tips

• An RD builds the habit of saving a fixed sum every month.
• Set up a standing instruction so you do not miss a month.
• If you already have a lump sum, a 5-year TD (7.5%) or NSC (7.7%) pays a higher rate than RD.

Want to know if your whole plan is on track? Get your free money score in about two minutes. No PAN, no Aadhaar.

About the Post Office RD Calculator

Free Post Office RD (Recurring Deposit) calculator. Estimate the 5-year maturity value and interest on a monthly deposit at the notified 6.7% p.a. rate.

Frequently asked questions

What is the Post Office RD interest rate?

The 5-year National Savings Recurring Deposit rate for Jul–Sep 2026 is 6.7% p.a.

What is the minimum Post Office RD deposit?

₹100 a month, in multiples of ₹10, with no upper limit.

What happens if I miss an RD instalment?

A small default fee is charged for each missed month. After 4 missed instalments the account is discontinued, though it can be revived within 2 months.