accounts calculator · 1 min
Savings growth calculator
Run plain compounding math for a savings balance, monthly contributions, return assumptions, and tax drag.
Quick calculator
Get one quick answer here. Save it to your full map when it counts.
These tools are free and fast. Each one answers a single question. Your full map then ties the answer to income, taxes, health costs, housing, and timing.
Compounding
Project a savings path
Ready when you are
Run it once. Then change one number and run it again.
The first result gives you the rough answer. The second result usually shows the real lever: age, income, tax bracket, premium, rate, or the monthly gap.
Bring it into the free map
The full map connects this savings path to spending, Social Security, healthcare, and taxes.
Start my free mapQuick calculator run
Run it, read what the result means, then bring the useful number into the map.
Calculator disclosure
What you'll see here. This is an educational tool. Your planning inputs stay in your browser — The Retirement Atlas does not receive them. The numbers you'll see are observations and projections, not advice. They depend on the assumptions you enter and may not reflect your situation. Identifiable details (name, email, phone) are only collected if you separately choose to save your map, ask for help, or be matched with a licensed annuity specialist, and those flows have their own consent steps. Consult your own licensed financial professional before making any financial decision.
Learn more
Read the answer behind the calculator.
Contribution answer
How much should I contribute to my 401(k)?
Use the savings-growth result beside the contribution decision.
IRA answer
How much should I contribute to an IRA?
Use the next-dollar framework when the savings question is outside the employer plan.
Planning number
How much do I need to retire?
Connect savings growth to the larger retirement number.