Understanding rd calculator
Each recurring deposit installment stays invested for a different length of time. The first deposit earns more interest than the last, so multiplying the full contribution total by one holding period is inappropriate. This regular-month model assumes punctual beginning-of-month installments and excludes missed-payment charges.
Formula and calculation method
Equivalent monthly rate i = (1 + nominal annual rate / compounding frequency)^(frequency/12) − 1. Beginning-of-month recurring deposits earn one extra month compared with an ordinary annuity.
Regular deposits on the first day of each modeled month. Bank-specific overdue charges, broken periods, exact dates and tax deductions are excluded.
How to use rd calculator
- Set Monthly recurring deposit. The example below uses 5000.
- Set Nominal annual interest (%). The example below uses 7.
- Set Number of monthly deposits. The example below uses 24.
- Set Compounds per year. The example below uses 4.
- Select Calculate to update the result. Reset restores the illustrated inputs. Copy, print or download your own result if you need a record.
Worked example
Example inputs
- Monthly recurring deposit
- 5000
- Nominal annual interest (%)
- 7
- Number of monthly deposits
- 24
- Compounds per year
- 4
- RD maturity amount
- 129,098.90478025
- Deposits made
- 120000
- Interest earned
- 9,098.90478025
Factors affecting your result
Regular deposits on the first day of each modeled month. Bank-specific overdue charges, broken periods, exact dates and tax deductions are excluded.
Changing monthly recurring deposit changes the scenario being evaluated. Adjust one input at a time when comparing results, keep a copy of the assumptions, and compare values using the same unit and period. A precise arithmetic result does not make an uncertain assumption precise.
Frequently asked questions
How does the rd calculator work?
Equivalent monthly rate i = (1 + nominal annual rate / compounding frequency)^(frequency/12) − 1. Beginning-of-month recurring deposits earn one extra month compared with an ordinary annuity.
What inputs does RD Calculator need?
Enter monthly recurring deposit, nominal annual interest (%), number of monthly deposits, compounds per year. Read the unit labels; percentages are entered as ordinary percentages, not decimal fractions.
How should I interpret the rd calculator result?
Regular deposits on the first day of each modeled month. Bank-specific overdue charges, broken periods, exact dates and tax deductions are excluded.
Are my rd calculator inputs uploaded?
No. The calculation runs in this browser. Favorites, recent tool names, theme and formatting preferences may be saved locally, but calculation inputs are not sent to a calculation server or stored by this website. Shared links do not include entered values.
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