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CALCULATOR · Finance

Savings Calculator

Work out what a starting balance plus a fixed monthly deposit becomes in a savings account, with interest shown separately from your own deposits.

Show formula
FV = P(1+i)^n + PMT·(((1+i)^n−1)/i), i = APR/12

Method reviewed:Future value of a starting balance plus an ordinary annuity, compounded monthly · reviewed August 2026

Inputs

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Result

Your result appears here

Enter Loan amount and the result fills in as you type.

How it works

  1. Enter a starting balance.
  2. Add your planned monthly deposit, rate and duration.
  3. See contributions vs interest separately.

Frequently asked questions

When is interest compounded?

Monthly, with deposits added at the end of each month.

Are inflation or taxes modeled?

No — balances are nominal. Adjust the rate yourself to explore real returns.

Examples

Saving 200 a month for 10 years at 4%
29,449.96: 24,000 of deposits and 5,449.96 of interest, compounded monthly.
Starting with 5,000 and adding 100 a month for 5 years at 3%
12,272.76 — 11,000 paid in and 1,272.76 earned in interest.

Which of these should I use?

These four run the same future-value arithmetic. What separates them is the question you are asking, not the maths:

  • Compound Interest Calculator — you want to see what the compounding itself does — how annual, monthly or daily compounding changes the same rate, and what APY a nominal rate really means.
  • Investment Calculator — the return is an assumption rather than a promise, and you need the answer in today's money — inflation-adjusted value and effective CAGR alongside the raw total.
  • Retirement Calculator — the question is not the balance but the income it supports, at a withdrawal rate, on a date you name.

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