RD Calculator — Monthly Deposits, Goals & Comparison
Build a recurring-deposit plan from regular monthly savings. Estimate maturity, find the instalment needed for a goal, calculate a target tenure or compare two quoted RD offers.
A monthly savings model with visible assumptions. Every instalment is assumed to arrive on time at your selected month position. Bank day-count rules, missed-payment charges and tax deduction dates are not reproduced.
Plan Your Recurring Deposit in Four Ways
Use an equal monthly instalment and your provider’s quoted nominal annual rate.
Turn a monthly amount into a savings plan
See how much comes from your instalments and how much is modelled interest.
Monthly deposits
Illustrate a fixed instalment paid regularly throughout the term.
Goal deposit
Solve the monthly amount needed for a gross maturity target.
Goal tenure
Find the first whole month when the model reaches your target.
Quote comparison
Compare two quoted rates and compounding conventions.
Your recurring-deposit illustration
Monthly deposit
₹0
Tenure / instalments
₹0
Total deposits
₹0
Gross modelled interest
₹0
Illustrative tax on interest
₹0
Net maturity after illustration
₹0
Assumes every instalment is paid on time at an unchanged rate. Actual bank conventions may differ. The tax illustration does not determine TDS, final liability or the effect of tax deductions on compounding.
Instalments and modelled growth
Green: modelled balance · Gold: cumulative deposits. Exact values appear in the table below.
Years are rolling 12-month periods, including a final partial year. Display rounding does not change the underlying calculations.
Match the RD plan to your monthly cash flow
An RD starts with a payment you can repeat. The maturity estimate comes after the instalment commitment.
Choose a sustainable instalment
Use Maturity mode for a monthly amount you can set aside consistently. Total deposits equal the monthly instalment multiplied by the number of months; interest is shown separately.
Work backwards from a savings goal
Goal Deposit calculates an equal monthly amount for your gross target and fixed tenure. It rounds upwards to a paisa, while your bank may require a particular instalment multiple. Recalculate with the amount the bank accepts.
Check the time commitment
Goal Tenure finds the earliest whole-month target crossing, capped at 600 months. The suggested month count is a mathematical result; it does not establish that a provider offers that term.
Compare terms on the same footing
Both offers share the instalment, duration and deposit timing. Only their rate and compounding method change. The result compares modelled amounts and does not assess bank suitability, safety or deposit protection.
How each instalment earns interest
A deposit made earlier stays invested longer. The tool calculates every instalment’s growth over its own remaining term.
The growth factor
For nominal annual percentage a, frequency k and remaining time t months, G(t) = (1 + a / (100 × k))^(k × t / 12). With simple interest, G(t) = 1 + a × t / 1200. Fractional periods follow this mathematical formula rather than a bank-specific day-count rule.
Maturity and deposit timing
For instalment D and n months: M = D × Σ G(n − j + δ), for j = 1 to n. δ is 1 for beginning deposits and 0 for end deposits. Beginning instalments grow for n through 1 months; end instalments grow for n − 1 through 0 months.
Goal deposit and zero interest
Goal deposit = target / Σ G(n − j + δ), rounded upwards to ₹0.01. At 0% interest, G(t) = 1 and maturity = D × n for either timing. Goal Tenure tests whole months to find the first amount meeting the gross target.
Gross balance versus tax illustration
Gross interest = maturity − total deposits. Illustrative tax = gross interest × assumed tax / 100. Net maturity subtracts only this assumed amount; tax slabs, withholding thresholds, annual deductions and their timing are not calculated.
Opening an RD: what to confirm before you commit
The application belongs with the provider. This page helps you review the recurring payment obligation.
1. Confirm the monthly terms
Ask for the instalment amount, accepted payment date, rate, maturity date and debit instructions. Check when the first deposit is due and how late or missed instalments affect the account.
2. Check account and KYC documents
Depending on the provider and whether you already have an account, you may need identity and address evidence, PAN or applicable tax documentation, funding account details and age evidence for an eligible senior-citizen product. Obtain the provider’s current list.
3. Review access and closure rules
Read the premature-closure terms, late-payment charges, missed-instalment consequences, nomination and renewal instructions. These are not included in the model, which assumes the full term and timely payments.
4. Reconcile the deposit record
Keep the opening confirmation and track actual monthly debits. For example, ₹5,000 for 36 months at a 7% nominal rate, quarterly mathematical compounding and beginning timing projects to ₹200,686.49. Total deposits are ₹1,80,000. This is an illustration, not a bank quote.
Honest by Design
The output is useful only when its deposit timing, interest method and exclusions are understood.
What this tool does
- Models equal monthly deposits at an unchanged nominal annual rate.
- Calculates gross maturity and separates deposits from interest.
- Solves a goal instalment or the first whole-month target crossing.
- Compares two entered offers with the same saving schedule.
- Shows a growth chart, monthly/yearly table and CSV/text downloads.
What this tool does not do
- Fetch current RD rates or recommend a financial institution.
- Apply a universal senior-citizen bonus; enter your applicable quoted rate.
- Calculate actual TDS, tax liability or deposit protection entitlement.
- Price missed instalments, late charges, premature closure or renewals.
- Reproduce bank-specific dates, day counts, rounding or interest-credit records.
Model and data boundaries
- All instalments arrive on time, with no withdrawals or additional contributions.
- Amounts are nominal rupees; inflation and purchasing power are not modelled.
- Tax is an optional assumed percentage of gross interest, without deduction timing.
- Inputs stay in this fragment’s browser calculations; it does not send or save them. The wider site may use analytics; Google serves the fonts.
- 600 months and capped amounts/rates are numerical safeguards, not product terms or advice.
Check the provider’s actual rules: SBI’s recurring-deposit product information describes regular monthly deposits and account-specific default or closure terms. This model does not apply those charges.
Recurring-deposit calculator questions
Understand the savings pattern before interpreting the maturity result.
Deposits and interest
How is an RD different from an FD?
This RD model adds an equal deposit every month. An FD model usually starts with one deposit. Later RD instalments earn interest for fewer months, so the same total principal does not automatically earn the same interest.
Which deposit timing should I choose?
Beginning timing places the first deposit at opening and gives each instalment at least one month before maturity. End timing is a separate comparison convention, with the last deposit at maturity. Match the actual provider’s due dates rather than assuming either model is exact.
Why might a bank show a different maturity?
A bank may use actual dates, different broken-period rules, deduction timing, product-specific rounding or charges. This calculator uses whole months and mathematically prorated compounding periods.
Goals and tax
Does a goal instalment guarantee the target?
No. It reaches the gross target only within the model’s unchanged-rate and timely-payment assumptions. A bank may require a different instalment multiple; actual deductions or penalties can change the amount received.
What does Goal Tenure return?
The first whole number of months reaching the gross target within 600 months. It is not a bank-approved tenure and does not make an affordability assessment.
Does the tax field calculate TDS?
No. It subtracts an assumed percentage from gross interest at the summary level. No legal thresholds, exemptions, withholding dates or final tax liability are assessed.
Start with the amount you can save each month
Then check the model against your provider’s instalment dates, maturity terms and charges.