What Is a Roth IRA Calculator
A Roth IRA calculator is a scenario model for estimating how after-tax contributions and investment results could build an account over time. This calculator works month by month, applies beginning- or end-of-month deposits, raises contributions annually when requested, subtracts an entered fee assumption, and records a yearly projection ledger.
A Roth IRA balance is not automatically tax-free spending money in every situation. Qualified distributions have specific requirements, nonqualified distributions follow ordering rules, conversion amounts can have separate five-year periods, and future returns are unknown. The projection measures entered assumptions; it does not approve a contribution, predict markets, or replace tax guidance.
How to Use the Roth IRA Calculator
- Enter your current age, projection age, current Roth IRA balance, and the first tax year for which you contributed to any Roth IRA established for your benefit.
- Enter the monthly amount planned for this Roth IRA and choose beginning- or end-of-month deposit timing.
- Add an annual contribution increase only when it represents an intentional savings plan; future IRS limits are not forecast.
- For the separate 2026 estimate, choose filing status and enter Roth-purpose modified AGI, taxable compensation, and other traditional or Roth IRA contributions.
- Enter expected annual return before fees, annual investment fees, and inflation as separate assumptions.
- Set an optional nominal balance target, calculate, and compare the base path with lower-return, higher-return, no-fee, and one-year-delay cases.
- Review the 2026 contribution estimate independently from the growth projection because future deposits are not automatically capped to one current-year rule.
- Read the age-and-five-tax-year checkpoint as a limited ordinary-path screen, not a determination that a distribution is qualified.
Keep the Growth Projection and 2026 Contribution Estimate Separate
The growth model answers what the entered account and deposit schedule would become under the selected return, fee, and inflation assumptions. The 2026 contribution estimate answers a narrower current-year question using age, filing status, entered modified AGI, taxable compensation, and contributions to other IRAs.
A current limit should not silently cap a decades-long projection. Congress can change statutory limits, inflation adjustments can change annual amounts, and income or compensation can move. The calculator preserves the savings scenario for planning while labeling the 2026 estimate as dated and separate.
Understand the 2026 Roth IRA Contribution Limits
For 2026, the IRS states that regular contributions across all traditional and Roth IRAs generally share a $7,500 limit, or $8,600 at age 50 or older, and cannot exceed eligible taxable compensation when that is lower. Contributions to another traditional or Roth IRA reduce the room available in this estimate.
The calculator does not count rollovers, conversions, qualified reservist repayments, employer SEP or SIMPLE contributions, or every special rule as ordinary contributions. Enter complete current-year facts and confirm them against account records and current IRS instructions before contributing.
Apply the 2026 Roth IRA Income Phase-Out Carefully
For 2026, the IRS phase-out range is $153,000 to $168,000 for single filers, heads of household, and married people filing separately who lived apart from a spouse all year. It is $242,000 to $252,000 for married filing jointly or a qualifying surviving spouse, and $0 to $10,000 for married filing separately after living with a spouse during the year.
Inside the applicable range, the calculator follows the reduced-limit worksheet pattern: it scales the age-based limit, rounds the positive reduced amount up to the next $10 with the $200 minimum rule, then limits that result by taxable compensation and other IRA contributions. The entered figure must already be modified AGI for Roth IRA purposes; gross salary is not a substitute.
Roth IRA Projection Formula Guide
The gross annual return becomes an effective monthly factor, while the annual fee becomes a separate monthly retention factor. A beginning-of-month deposit receives that month's modeled return and fee treatment; an end-of-month deposit is added after the month's investment change.
Annual deposit increases begin after each completed contribution year. Inflation discounts only the final nominal value for purchasing-power context. The no-fee result uses the same contributions and gross return so its difference from the base case represents direct fees plus the compounding those fees prevented.
Gross monthly factor = (1 + annual return)^(1 / 12)Monthly fee factor = (1 - annual fee rate)^(1 / 12)Real ending balance = nominal ending balance / (1 + inflation)^yearsTotal fee drag = no-fee ending balance - modeled-fee ending balanceReduced 2026 Roth limit = lesser of rounded income-phase-out amount and remaining compensation-based IRA room
Model Deposit Timing, Step-Ups, and Delay Cost
A deposit made at the beginning of a month has one more modeled period in the market than the same amount deposited at month-end. Use the setting that resembles the actual transfer schedule. Choosing earlier timing only because it displays a larger balance weakens the plan rather than improving it.
The one-year-delay case leaves the current balance invested but postpones new deposits for twelve months. Its gap includes both omitted contributions and lost compounding. An annual step-up can partly offset a late start, but repeated increases may exceed future limits or cash flow, so revisit the schedule each year.
Read Fees, Inflation, and Return Sensitivity Together
Expected return is entered before fees. Direct modeled fees show amounts removed in the monthly loop, while fee drag includes the future growth those removed dollars no longer earn. If a quoted return is already net of all relevant fees, subtracting the same fee again would double-count it.
The lower and higher scenarios move the gross annual return two percentage points around the base rate. They are sensitivity cases, not confidence intervals. The today's-dollar result separately discounts the nominal balance for inflation so a large future amount is not mistaken for present purchasing power.
Check the Ordinary Qualified-Distribution Path Without Overclaiming
Publication 590-B describes a qualified Roth IRA distribution as one made after the five-year period beginning with the first contribution tax year and after age 59 1/2, or because of another listed qualifying condition. The calculator checks only the ordinary age-and-five-tax-year path at the selected projection age.
Disability, death, first-home treatment, conversion recapture periods, distribution dates, and other exceptions are not inferred. A separate five-year period can apply to each conversion for additional-tax purposes. The displayed checkpoint is therefore a planning reminder, not a tax classification of a future withdrawal.
Do Not Treat Every Roth IRA Withdrawal the Same
Roth IRA distributions that are not qualified can follow ordering rules under which regular contributions, conversion amounts, and earnings are treated differently. Publication 590-B explains that regular contributions generally come out before earnings, while taxable conversion amounts and earnings can have additional considerations.
This accumulation calculator does not store contribution basis, conversion history, rollover dates, prior distributions, or exceptions. It therefore does not calculate tax or additional tax on a withdrawal. Use complete records and the current distribution rules before moving money out of the account.
Worked Roth IRA Projection Example
Consider a 35-year-old with $15,000 already invested, $625 deposited at each month-end, a 2% yearly deposit increase, 7% gross return, 0.25% annual fees, and a projection to age 67. The first-year planned contribution is $7,500 before any other IRA contributions, matching the general 2026 under-50 limit before income and compensation tests.
A single filer entering $100,000 of Roth-purpose modified AGI and $100,000 of taxable compensation remains below the 2026 single phase-out range. The long-range table still uses the entered deposit schedule rather than pretending that the 2026 limit remains unchanged for 32 years.
| Input group | Default | Calculation role |
|---|---|---|
| Projection ages | 35 to 67 | Creates 384 monthly periods |
| Monthly deposit | $625 | Creates a $7,500 first-year plan |
| Gross return / fee | 7% / 0.25% | Creates separate monthly growth and fee factors |
| 2026 MAGI / compensation | $100,000 / $100,000 | Supports the dated direct-contribution estimate |
| First Roth tax year | 2021 | Supports the limited five-tax-year checkpoint |
Roth IRA Calculator Features
- Age-to-age projection across whole monthly periods.
- Beginning- or end-of-month recurring deposit timing.
- Annual deposit increases without assuming future statutory limits.
- Separate gross return, direct fees, net growth, and total fee drag.
- Nominal and today's-dollar ending values.
- Lower, base, higher, no-fee, and one-year-delay scenarios.
- Optional target timing and ending-gap analysis.
- A dated 2026 direct-contribution estimate using filing status, modified AGI, compensation, age, and other IRA contributions.
- A limited ordinary age-and-five-tax-year distribution checkpoint.
- A downloadable year-by-year contribution, return, fee, and balance ledger.
Benefits of an Auditable Roth IRA Projection
An auditable model shows whether progress comes from deposits, assumed returns, or simply a longer horizon. It also reveals how direct fees, lost compounding, inflation, delayed deposits, and an aggressive return assumption change the same plan. That makes the result easier to challenge and update than one unexplained future-value number.
Common Roth IRA Calculator Use Cases
The calculator can support a recurring savings review, a fee comparison, a retirement checkpoint, a contribution step-up discussion, a target-gap estimate, or a traditional-versus-Roth scenario. It does not recommend an investment, prove that a Roth is preferable, or calculate the tax cost of a conversion.
- Estimate a Roth IRA balance at a selected future age.
- Compare monthly contribution levels with the same market assumptions.
- Measure direct fees and total long-term fee drag.
- Translate a nominal future balance into today's purchasing power.
- Estimate 2026 direct-contribution room from entered tax facts.
- See how one year without new deposits changes the result.
- Check progress toward a nominal Roth IRA balance target.
- Prepare focused questions for a tax or financial professional.
Roth IRA Lifetime RMD Context
The IRS states that required minimum distributions do not apply to a Roth IRA while the original owner is alive. That can make the account useful in a broader withdrawal or estate plan, but it does not mean beneficiaries can ignore distribution rules.
Inherited Roth IRAs can be subject to beneficiary RMD and timing rules. This page models accumulation for the original owner only. It does not project inherited-account distributions, beneficiary categories, estate taxation, or the ten-year rule.
Accuracy, Scope, and Trust Notes
The monthly calculation retains full JavaScript floating-point precision and rounds only displayed values. Every comparison reuses the same horizon and deposit rules, and the final yearly row reconciles to the headline nominal balance. The contribution estimate uses published 2026 dollar thresholds and worksheet-style rounding.
Actual accounts can have volatile returns, cash positions, changing funds, advisory and fund fees, irregular deposits, conversions, rollovers, withdrawals, tax-law changes, and incomplete eligibility inputs. Recalculate when facts change, verify current IRS material, and use qualified help for contribution or distribution decisions.
- Enter Roth-purpose modified AGI from the applicable worksheet rather than gross income.
- Include regular contributions to every traditional and Roth IRA in the current-year check.
- Do not treat the sensitivity cases as forecasts or probability ranges.
- Avoid subtracting a fee twice when the entered return is already net of that charge.
- Keep regular contribution, conversion, rollover, and distribution records separate.
- Confirm rules and limits for the tax year before acting.
Authoritative Roth IRA References
These IRS and Investor.gov resources support the current contribution, phase-out, distribution, RMD, and fee explanations on this page. They do not endorse the calculator or determine whether one person's contribution or withdrawal is allowed.