Roth IRA Calculator
Project Roth IRA balance and tax-free growth by retirement.
- Last reviewed
- August 26, 2026
- Cost
- Free to use
- Data
- Runs in your browser
- Reviewed by
- Anton Jonson
Total Roth IRA
—
Total Contributions
—
Tax-Free Growth
—
Methodology
How this calculator handles inputs
This calculator uses the values you enter above and applies the formula explained in the guide below. Results update in the browser and are intended for quick planning, comparison, and sanity-checking.
- Use consistent periods, currencies, and units across inputs.
- Review any assumptions before using the result in a decision.
- Recalculate when rates, prices, tax rules, or business terms change.
Important note
This tool provides general planning information only. It is not tax, legal, financial, accounting, or investment advice. Check the current rules for your location and speak with a qualified professional before making a high-stakes decision.
Guide
How it works
Use this calculator to project a Roth IRA balance and tax-free growth by retirement age.
What this calculator does
The Roth IRA calculator estimates how current balance and annual contributions may grow over time. Roth IRA withdrawals can be tax-free when qualified rules are met.
It uses:
- current age and retirement age
- current Roth IRA balance
- annual contribution
- expected annual return
Roth IRA Formula
FV = P(1 + r)^n + PMT × (((1 + r)^n - 1) / r)
Where:
- FV = Roth IRA value at retirement
- P = current balance
- PMT = annual contribution
- r = annual return
- n = years until retirement
Example calculation
If:
- Current balance = 25,000
- Annual contribution = 7,500
- Expected return = 7%
- Years to retirement = 30
Then:
- Contributions grow each year
- Current balance compounds over time
- Total contributions are tracked
- Growth is tax-free if qualified
The Roth IRA may grow to hundreds of thousands by retirement.
What is a Roth IRA?
A Roth IRA is an individual retirement account funded with after-tax dollars. Qualified withdrawals in retirement are tax-free.
Why Roth IRA planning matters
- estimates tax-free retirement assets
- shows contribution growth over time
- helps compare Roth and Traditional accounts
- supports long-term tax diversification
When to use this calculator
- projecting Roth IRA growth
- testing contribution levels
- comparing retirement ages
- estimating tax-free growth
Common mistakes
- ignoring income eligibility rules
- exceeding contribution limits
- assuming all withdrawals are qualified
- forgetting contribution limits change over time
Roth IRA vs Traditional IRA
Roth IRA contributions are after-tax and qualified withdrawals are tax-free. Traditional IRA contributions may be deductible, but withdrawals are usually taxable.
The better choice often depends on current and future tax rates.
FAQs
What is a Roth IRA?
A Roth IRA is an after-tax retirement account with potential tax-free qualified withdrawals.
How do you calculate Roth IRA growth?
Project current balance and annual contributions forward using compound returns.
What is a good Roth IRA contribution?
A good contribution is as much as you can afford up to the annual IRS limit.
What is the difference between Roth IRA and Traditional IRA?
Roth uses after-tax money. Traditional often uses pre-tax money.
Continue exploring
Related calculators
Explore the next calculations most relevant to this topic.
retirement-accounts
Traditional IRA Calculator
Project Traditional IRA balance and estimated after-tax retirement value.
retirement-accounts
Roth vs Traditional IRA Calculator
Compare after-tax retirement value of Roth and Traditional IRA contributions.
retirement-accounts
Backdoor Roth Calculator
Estimate pro-rata tax and future tax-free value from a backdoor Roth contribution.