Roth IRA Calculator for 2026 Roth Contribution Room

This Roth IRA calculator estimates direct contribution room under the selected tax-year rules, then adds a simple account-growth projection. The calculation is aimed at U.S. retirement planning where the household already has taxable compensation, modified adjusted gross income, and prior IRA contribution information available. It does not prepare a tax return or decide whether a Roth IRA is better than a traditional IRA.

The first result is eligibility-driven. The calculator compares the IRS annual IRA limit with taxable compensation, applies the age 50 catch-up amount, reduces the result when modified AGI falls inside a Roth IRA phaseout range, and subtracts IRA contributions already made for the same year. The second result is planning-driven. It models the eligible annual Roth amount as monthly contributions against the current Roth balance and an entered return assumption.

This structure helps separate three questions that are often blended together. First, how much can be contributed to a Roth IRA for the year? Second, would a planned contribution create an excess amount? Third, how might eligible contributions and an existing balance compound over a chosen period?

The answer can change during the year when income, filing status, compensation, or prior IRA deposits change. A household with income near a phaseout boundary may move from full contribution room to partial room after a bonus, business profit, capital gain, or other income event. A household with lower compensation may have a limit below the published IRA maximum even when modified AGI is far below the phaseout range.

• Annual room review before a contribution is sent to a custodian.
• Income phaseout review for single, head-of-household, joint, and separate filing groups.
• Comparison of a planned Roth deposit with remaining room after prior IRA contributions.
• Longer-range projection using current balance, annual contribution, years, and return.

For a broader view of traditional and Roth contribution room, the IRA Calculator separates combined IRA limits, traditional IRA room, and deduction context before a Roth-specific decision is reviewed.

The calculation starts with the IRS annual IRA limit for the selected year. In 2026, the base limit is $7,500 and the age 50 catch-up amount brings the total to $8,600. In 2025, the comparable values are $7,000 and $8,000. Taxable compensation can reduce either amount because IRA contributions cannot exceed compensation for the year.

The reduced Roth limit uses the IRS phaseout method. When modified AGI is below the phaseout start, the full annual limit is allowed. When modified AGI reaches the upper threshold, the direct contribution is zero. Inside the phaseout band, the annual limit is reduced by the income fraction, rounded up to the nearest $10, and protected by a $200 minimum partial amount when the result is still positive.

According to IRS retirement topics on IRA contribution limits, 2026 total contributions to traditional and Roth IRAs cannot exceed $7,500, or $8,600 at age 50 or older, unless taxable compensation is lower.

For the projection, the calculator uses the eligible annual contribution after Roth limits and prior IRA deposits are considered. The eligible amount is divided into monthly deposits, then combined with the current balance using monthly compounding. The return input is only an assumption; it is not an expected return, guarantee, or investment recommendation.

Projection contributions are intentionally capped by remaining Roth room. If the planned contribution is larger than the eligible amount, the growth scenario uses only the eligible annual contribution and reports the difference as possible excess. That keeps the growth estimate aligned with the contribution rules instead of modeling deposits that the selected facts do not support.

For workplace retirement deferrals that follow separate IRS limits, the 401K Calculator estimates employee deferrals, employer match, and plan-limit context alongside IRA planning.

Roth IRA results are easier to review when the main terms are separated before numbers are interpreted. The calculator uses these concepts as independent checks rather than treating a Roth IRA as a single yes-or-no decision.

The estimate is most useful when these values are reviewed from the most restrictive rule to the least restrictive rule. Taxable compensation and phaseout status define the allowed amount. Existing IRA contributions then reduce remaining room. Projection assumptions should be considered only after the eligible contribution amount is known.

The calculator does not model backdoor Roth IRA steps, pro rata taxation, Roth conversions, spousal IRA coordination, inherited IRA rules, or the five-year distribution rules. Those issues can be important, but they are separate from the direct contribution room calculation. Keeping them outside the core formula makes the result easier to audit against the IRS annual limit and phaseout tables.

For costs that can reduce investment growth, the Investment Fees Calculator shows how expense ratios, advisory fees, and flat account costs may affect long-term balances.

For 2026, the calculator applies a $7,500 base IRA limit and an $8,600 limit for age 50 or older. These limits are shared across all traditional and Roth IRAs. They do not include rollovers, conversions, employer-plan Roth deferrals, SEP employer contributions, SIMPLE IRA limits, or qualified reservist repayments.

The 2026 Roth IRA modified AGI phaseout ranges are $153,000 to $168,000 for single and head-of-household filers, $242,000 to $252,000 for married couples filing jointly, and $0 to $10,000 for married separate filers who lived with a spouse during the year. The calculator treats married filing separately as the stricter range because that is the common planning risk for separate filers.

As published in IRS Notice 2025-67, Roth phaseouts run from $153,000 to $168,000 for singles and heads of household and from $242,000 to $252,000 for married joint filers.

The page also keeps 2025 available because contribution decisions can occur near filing deadlines and records may still need a prior-year check. The 2025 direct Roth phaseout ranges were $150,000 to $165,000 for single and head-of-household filers and $236,000 to $246,000 for married joint filers. The 2025 combined IRA limit was $7,000, or $8,000 at age 50 or older.

A direct Roth IRA contribution can be made for a tax year until the filing due date for that year, not including extensions. That timing makes year selection important. A deposit made early in 2026 could be designated for 2025 or 2026 depending on custodian instructions and filing timing, so the selected tax year should match the contribution designation rather than the calendar date alone.

For a pure compounding comparison apart from IRA eligibility, the Compound Interest Calculator models balance growth from principal, recurring deposits, time, and return assumptions.

After the results update, the remaining room and possible excess rows should be read together. Remaining room shows the largest additional direct Roth IRA contribution supported by the entries. Possible excess shows how much of the planned contribution sits above that room. The projection uses the eligible amount, so a large possible excess does not inflate the projected balance.

A records check should include all IRA contributions for the tax year, not only the Roth IRA account currently being reviewed. Missing a prior traditional IRA deposit can overstate remaining direct Roth IRA room.

For longer retirement accumulation scenarios with savings rate and target-age assumptions, the Retirement Savings Calculator broadens the view beyond one annual Roth IRA decision.

• •
  Contribution clarity: The calculator puts the annual limit, phaseout result, existing IRA deposits, and remaining Roth room in separate rows so each part can be checked independently.
• •
  Excess-risk review: The planned contribution is compared with remaining room before projection. That prevents an aggressive deposit assumption from hiding a possible excess contribution issue.
• •
  Scenario planning: Current balance, eligible annual contribution, years, and return can be changed quickly to show how sensitive the projected balance is to each assumption.
• •
  Rule boundaries: The calculator focuses on direct Roth IRA contributions. It does not calculate Roth conversions, backdoor Roth tax effects, investment selection, penalties, or state-specific tax treatment.

The result is strongest as a pre-contribution checklist. It can flag when the contribution appears fully available, partially phased out, or unavailable for direct Roth funding. It cannot confirm modified AGI from a completed tax return or account for every custodian-level correction rule.

For timeline planning after Roth eligibility is reviewed, the Early Retirement Calculator compares savings, spending, inflation, returns, and withdrawal assumptions against a target retirement age.

According to the Investor.gov compound interest calculator, projections commonly depend on initial investment, monthly contribution, length of time, estimated interest rate, and compounding frequency.

An excess contribution risk appears when the planned contribution is larger than remaining room. The calculator reports the difference, but correction steps depend on timing, custodian records, earnings, and tax filing status. It should be treated as a prompt for records review rather than a substitute for tax guidance.

Filing status deserves careful attention because the married filing separately range is much narrower than the single or joint ranges when spouses lived together during the year. A separate return does not automatically mean the stricter Roth range applies in every case, but the living-arrangement rule can materially change direct Roth eligibility.

For retirement drawdown planning after savings have accumulated, the Retirement Withdrawal Calculator estimates how withdrawals, inflation, and balance longevity interact.