Post Office RD Calculator

Estimate exact 5-year National Savings Recurring Deposit returns with official quarterly compounding interest on monthly savings.

Recurring Deposit Inputs

RD Maturity Output

Total Maturity Value
₹3,56,830
Total Monthly Deposits
₹3,00,000
Total Interest Accrued
₹56,830
Interest Rate
6.7% p.a.
Total Deposits Count
60 Installments
Post Office RD Compounding Formula

In the 5-Year National Savings Recurring Deposit Account, each monthly installment P earns quarterly compounded interest for the exact remaining duration of the 60-month term:

M = ∑ [P × (1 + r / 400)^((61 - i) / 3)] (for i = 1 to 60)

Where M is the aggregate maturity sum, P is the fixed monthly deposit, r is the annual interest rate (6.7%), and i is the deposit month index from 1 to 60.

Guide to National Savings Recurring Deposit Account (Post Office RD)

The Post Office 5-Year Recurring Deposit (RD) is an exemplary systematic savings vehicle crafted by India Post to inculcate financial discipline among salaried employees, small business owners, daily wage earners, and homemakers across India. By committing a small, manageable amount every month, depositors build a substantial capital corpus over a fixed 5-year (60 months) tenure backed by the Government of India's absolute sovereign guarantee.

While commercial banks offer flexible RD tenures ranging from 6 months to 10 years, India Post's standardized 5-year recurring deposit provides superior stability, quarterly compound interest, loan facilities against accumulated balances, and advance deposit rebate incentives.

Current Post Office RD Interest Rate & Compounding Details

The interest rate for Post Office RD accounts is established by the Ministry of Finance. For the current financial year, the account offers 6.7% per annum compounded quarterly. Once you open an account, the interest rate contracted at the time of opening remains guaranteed for your entire 5-year duration, insulating your savings against future interest rate cuts.

Monthly Deposit (₹) Total Deposit (60 Mos) Quarterly Compounded Interest (₹) Total Maturity Value (₹) Effective Cumulative Return
₹1,000 / month ₹60,000 ₹11,366 ₹71,366 18.94%
₹2,500 / month ₹1,50,000 ₹28,415 ₹1,78,415 18.94%
₹5,000 / month ₹3,00,000 ₹56,830 ₹3,56,830 18.94%
₹10,000 / month ₹6,00,000 ₹1,13,660 ₹7,13,660 18.94%
₹25,000 / month ₹15,00,000 ₹2,84,150 ₹17,84,150 18.94%

How Monthly Compounding Works for Recurring Deposits

Calculating recurring deposit maturity is mathematically more complex than fixed deposits. The first installment deposited in Month 1 stays in the account for the entire 60 months (20 full compounding quarters), earning maximum compound growth. The second installment deposited in Month 2 stays for 59 months, and so on, until the 60th installment which stays for just 1 month.

Because interest compounds on a quarterly basis (every 3 months), each rupee deposited compounds multiple times throughout the term, creating substantial long-term wealth out of modest recurring contributions.

Mathematical Method & Actuarial Formula

The total maturity amount M of a 60-month Post Office RD is derived from the compound interest summation formula:

M = ∑ [P × (1 + r / 400)^((61 - i) / 3)] (for i = 1 to 60)

Where:

  • M: Aggregate maturity value paid upon completion of 60 months.
  • P: Fixed monthly installment sum deposited.
  • r: Annual nominal interest rate (currently 6.7%).
  • i: Installment index from month 1 to month 60.
  • (61 - i) / 3: Number of remaining compounding quarters that installment i remains invested.

Account Opening Guidelines & Deposit Due Dates

  • Minimum Starting Amount: As low as ₹100 per month and in multiples of ₹10 thereafter. There is no maximum investment limit.
  • Deposit Due Dates: If an account is opened between the 1st and 15th of a calendar month, subsequent deposits must be made by the 15th of every month. If opened after the 15th, deposits must be paid by the last working day of the month.
  • Default & Revival Fee: If an installment is not deposited on time, a default fee of ₹1 for every ₹100 of monthly installment is levied per month of default. If four consecutive defaults occur, the account becomes discontinued and can be revived within two months.

Special Incentives: Advance Deposit Cash Rebate

India Post rewards disciplined depositors who pay their monthly installments in advance. If you deposit at least 6 consecutive monthly installments in advance in a single lump sum, the post office awards an attractive cash rebate:

  • 6 to 11 Months in Advance: Rebate of ₹10 for every ₹100 denomination.
  • 12 Months or More in Advance: Rebate of ₹40 for every ₹100 denomination.

Low-Interest Loan Facility Against Post Office RD

One of the finest liquidity features of a Post Office RD is the ability to borrow funds without breaking the account. After completing 1 year (12 successful monthly installments), an investor can avail a loan of up to 50% of the credit balance standing in the account. The loan can be repaid in a single lump sum or in easy monthly installments. The interest charged on the loan is strictly 2% above the RD interest rate (currently 8.7% p.a.), making it vastly cheaper than unsecured personal loans or credit card advances.

Premature Closure & 5-Year Extension Rules

  • Premature Closure: An RD account can be closed prematurely after 3 years from the date of account opening. However, upon premature closure, interest is awarded at the prevailing Post Office Savings Account rate (4.0% p.a.) rather than the full RD rate.
  • 5-Year Extension: On completion of 5 years, the account can be extended for an additional 5-year block by submitting an application to the post office. During the extension period, the original interest rate continues to apply.

Tax Treatment of Post Office RD Interest

Interest accrued on Post Office RD accounts is fully taxable under the head "Income from Other Sources". The post office does not deduct TDS under Section 194A for small accounts, but depositors must declare the interest in their annual ITR. Senior citizens can claim up to ₹50,000 tax deduction on post office interest under Section 80TTB.

Common Mistakes to Avoid

1. Missing Payment Due Dates: Forgetting the 15th-of-the-month cut-off attracts penalty defaults and risks account discontinuation after 4 missed installments.

2. Prematurely Closing Before 3 Years: Closing the account before 3 years is not permitted except in the unfortunate event of the depositor's demise.

3. Not Claiming Advance Rebates: Paying installments in advance without informing the counter clerk can result in missing out on the cash rebate benefits.

Frequently Asked Questions

If you miss an installment, a default fee of ₹1 per ₹100 denomination is charged. You can regularize the account by paying the missed installment along with the nominal default fee before the next due date.

Yes. If you hold a Post Office Savings Account linked with India Post Internet Banking or the IPPB (India Post Payments Bank) mobile app, you can open and fund your RD account online without visiting the physical branch.

Yes, interest earned on Post Office RD accounts is fully taxable under the head 'Income from Other Sources' according to the depositor's applicable income tax slab.

Yes, a parent or legal guardian can open an RD account in the name of a minor of any age. Minors who are 10 years of age or above can open and operate the account independently.

You cannot make partial withdrawals, but after 1 year (12 installments), you are entitled to take a loan of up to 50% of the total accumulated balance at a low interest rate.

Important Notice & Statutory Disclaimer:

Post Office Recurring Deposit interest rates are determined and revised by the Ministry of Finance, Government of India. Calculations provided herein are based on statutory quarterly compounding formulas. Consult your post office branch or official post office portal before initiating financial commitments.