CALCULATOR · Finance
Retirement Calculator
See what your savings could be worth at retirement, what yearly income that supports at your chosen withdrawal rate, and how far you are from a target income.
Show formula
Method reviewed:Accumulation to retirement age plus a constant safe-withdrawal rate (the 4% rule: Bengen, 1994, extended by the 1998 Trinity study) · reviewed August 2026
Inputs
4% is a common rule of thumb, not a guarantee.
In today’s money — inflation is applied for you.
Result
Your result appears here
Enter Loan amount and the result fills in as you type.
How it works
- Enter your age, target retirement age, current savings and monthly contribution.
- Set an expected return, an inflation rate and the withdrawal rate you plan to use.
- Optionally enter the yearly income you want in today’s money to see the gap and the extra monthly saving that would close it.
Frequently asked questions
What is the 4% rule?
A rule of thumb from studies of historical US market data suggesting that withdrawing about 4% of a portfolio in the first year, then adjusting for inflation, has usually lasted around thirty years. It is a starting point for discussion, not a guarantee, and later research argues for lower rates in some conditions.
Why enter my target income in today’s money?
Because that is the only figure you can judge. The calculator inflates it to your retirement date for you, so a target of 40,000 means "40,000 of today’s spending power", not 40,000 nominal.
Does this include a state pension or employer match?
No. Add employer contributions to your monthly figure if they are paid in. State or workplace pensions reduce the private capital you need, so treat the required-capital figure as an upper bound.
What is not modelled here?
Tax, fees, market volatility, sequence-of-returns risk, career breaks and changing contributions. It is a straight-line projection: useful for direction and for comparing scenarios, not for a final decision.
Should I act on this?
Use it to frame questions, then take them to a qualified adviser who can see your full position. Nothing here is financial advice.
Examples
- Age 35, retiring at 65, with 50,000 saved and 500 a month at 6%
- A projected 803,386.28 at 65. At a 4% withdrawal rate that supports 32,135.45 a year, or 2,677.95 a month.
- What nest egg does an income of 60,000 a year need?
- 1,500,000 at a 4% withdrawal rate. The plan above falls 696,613.72 short; saving about 693.48 more a month closes the gap.
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.
- Savings Calculator — the money sits in a savings account at a rate the bank quotes you, and you want to know what a fixed monthly deposit turns into.
- 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.
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