Retirement savings calculator
Calculator
The calculator needs JavaScript. The tables below give the same numbers for common cases.
How it is worked out
- Years to go = 35, months = 420, monthly rate i = 0.005.
- Balance = B × (1 + i)^m + C × ((1 + i)^m − 1) ÷ i = $874,826.18.
- Inflation-adjusted = balance ÷ (1 + inflation)^years = $368,626.44.
- A projection from the numbers you typed, not a promise: real returns vary.
| Inputs | Answer |
|---|---|
| Current age: 30; Retirement age: 65; Current savings: 20000; Monthly contribution: 500; Expected annual return: 6; Expected inflation: 2.5 | Saving $500.00 a month for 35 years at 6% grows $20,000.00 to $874,826.18 (about $368,626.44 in today's money). |
| Current age: 45; Retirement age: 67; Current savings: 150000; Monthly contribution: 1200; Expected annual return: 5; Expected inflation: 2.5 | Saving $1,200.00 a month for 22 years at 5% grows $150,000.00 to $1,024,821.07 (about $595,282.35 in today's money). |
| Current age: 25; Retirement age: 60; Current savings: 0; Monthly contribution: 300; Expected annual return: 7; Expected inflation: 3 | Saving $300.00 a month for 35 years at 7% grows $0.00 to $540,316.38 (about $192,019.47 in today's money). |
How to use it
The calculator projects your balance at retirement age by growing your current savings and your monthly contributions at the expected annual return, compounded monthly. It also shows the result in today's money by discounting for inflation.
It is a projection from the numbers you type: actual returns vary and are not guaranteed, contributions may change, and taxes and fees are not included. These are estimates from the numbers you type, not financial advice or an offer; real products add fees and change rates.
Frequently asked questions
How is the retirement balance projected?
Savings and contributions grow at the expected return, compounded monthly, until the retirement age.
Why show inflation-adjusted money?
Because prices rise, so a future dollar buys less than a dollar today.
What return should I assume?
A cautious estimate; the calculator uses exactly the rate you type.
Method: standard arithmetic shown step by step; no outside data is used. Checked 2026-11-12.
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General information only. Results are plain arithmetic on the numbers you enter; check anything important (money, health, school work) against your own records or the official source.