Student Loan Repayment US Calculator - Standard And IBR Estimates

A student loan repayment calculator US estimates a monthly obligation before you change a federal loan plan, build a budget, or consider an extra payment. Compare fixed amortization with an IBR-style income estimate using balance, rate, term, AGI, family size, and payment percentage. Treat the result as planning information, not a servicer quote or eligibility decision.

• • Plan a fixed payment: Use Standard Fixed to estimate the payment that amortizes a balance over one to 30 years. The 10-year setting reflects the ordinary Standard comparison.
• • Explore income-based math: Choose IBR Estimate, enter AGI and family size, and select 10% or 15% of modeled discretionary income. This is an illustration, not a qualification test.
• • Test extra payments: Add a recurring amount to see whether the balance reaches zero sooner and how much simulated interest falls. The final payment is capped at the amount due.
• • Prepare questions: Use payment, interest, threshold, and balance outputs to ask about loan type, capitalization, recertification, forgiveness, and current federal rules.

The page reflects information available in 2026. The current Federal Student Aid page lists RAP, IBR, ICR, and PAYE, while noting that ICR and PAYE will be eliminated no later than July 1, 2028. SAVE is not offered as an active choice here. Private loans follow lender contracts rather than federal IDR rules.

Keep your current statement and official plan information beside any estimate.

For a simpler fixed-payment comparison without income fields, the student loan payment calculator is a useful companion.

This student loan repayment calculator US applies the ordinary amortizing-loan equation for Standard Fixed. IBR Estimate subtracts 150% of a 2026 poverty guideline from AGI, applies the selected percentage, and simulates monthly interest plus any extra payment.

• P: Starting principal balance in dollars.
• r: Monthly decimal rate: annual percentage rate divided by 1,200.
• n: Standard payment count: years multiplied by 12.
• AGI and family size: Income and household size used for the modeled IBR threshold.
• Extra payment: Optional amount added in each simulated month.

At zero interest, Standard Fixed uses P divided by n. Otherwise, each month adds interest, applies the scheduled and extra payment, and caps the final payment at the amount due. If payment is no greater than interest, the result is non-amortizing rather than a made-up payoff date.

Total interest sums simulated monthly interest. Total paid sums actual payments. Interest-saved and months-saved compare the extra-payment scenario with the same assumptions and no extra.

According to OpenStax Loan Amortization, the amortizing payment equation is PMT = P[r(1+r)^n]/[(1+r)^n-1]; the calculator adds the mathematically necessary zero-rate branch P/n.

For a broader amortization and payoff-time comparison, open the loan repayment calculator after reviewing the student-loan assumptions.

These four ideas explain why a plan payment does not tell the whole repayment story.

The poverty guideline is dated. This model uses the 2026 contiguous 48-state and District of Columbia table, not Alaska, Hawaii, or a future update.

The labels are intentionally narrow: Standard Fixed models amortization, while IBR Estimate models income math only. Actual plans include eligibility, recertification, forgiveness, loan-type rules, and borrower-date rules that this page does not adjudicate.

If you want to isolate the income side of the estimate, the discretionary income calculator provides a focused way to examine income available after deductions.

Use this student loan repayment calculator US with the balance and nominal rate from your statement. Change one assumption at a time so the cause of a payment change is clear.

1. 1 Enter balance and rate: Use current principal and annual nominal rate. Do not substitute APR because fees are not modeled.
2. 2 Choose a scenario: Select Standard Fixed for fixed-term math or IBR Estimate for an income-based illustration. SAVE is not offered as an active plan here, and current federal plan availability can change.
3. 3 Set assumptions: Enter the Standard term, or enter AGI, family size, and 10% or 15% for IBR.
4. 4 Add an extra payment: Enter zero for baseline results, then add a realistic recurring amount to compare interest and payoff time.
5. 5 Read the warning: Check first-month interest and Scenario Status. Non-amortizing means the assumed payment does not reduce principal.
6. 6 Verify official details: Confirm eligibility, capitalization, recertification, and actual payment with Federal Student Aid or your servicer.

A borrower with $30,000 at 5.50%, $45,000 AGI, and family size one sees about $325.58 under 10-year Standard Fixed and $175.50 under the 10% IBR-style scenario. The lower figure still requires an eligibility and payoff review.

When forgiveness is part of your planning question, compare this payment scenario with the student loan forgiveness calculator rather than judging a plan by monthly cost alone.

A repayment comparison is useful when it supports a specific decision. Keep assumptions visible and treat outputs as scenario values.

• • Build a budget: The scheduled payment and first-month interest show the starting cash obligation and how much initially services interest.
• • See term cost: Changing the Standard term reveals the tradeoff between a lower payment and more months of interest.
• • Test income changes: Changing AGI or family size shows how the modeled IBR threshold and payment respond.
• • Measure extra payments: Comparison outputs show whether an added monthly amount reduces simulated interest and payoff months.
• • Catch warnings: Non-amortizing status identifies assumptions in which payment does not reduce principal.

Use the student loan repayment calculator US to compare rates, terms, income assumptions, and extra payments one variable at a time. Do not select a federal plan by payment alone: lower payments can involve different repayment periods, recertification, forgiveness, and tax considerations.

To place an extra student-loan payment beside other debts and payoff strategies, use the debt payoff calculator for a wider debt plan.

The result depends on contract terms, household data, and date-sensitive income-plan rules.

• • This page is an educational estimate, not legal, tax, or financial advice, an eligibility determination, or a federal servicer quote.
• • The IBR scenario uses 2026 contiguous-state/DC guidelines, a 150% threshold, and a selected 10% or 15% rate. It does not model every borrower-date or spouse-income rule.
• • The simulation assumes fixed monthly interest and payment, with no fees, capitalization events, deferments, subsidies, or forgiveness.

Federal Student Aid says IDR payments use income and family size, require annual recertification, and may allow discharge after an applicable period. Confirm your first-borrowed date, loan type, AGI documentation, current plan, and deadline with the official application or servicer.

The HHS table varies by location and does not automatically update future guidelines.

According to Federal Student Aid Income-Driven Repayment Plans, the current page lists RAP, IBR, ICR, and PAYE, shows IBR rates of 10% or 15% based on when the borrower first borrowed, and says ICR and PAYE will be eliminated no later than July 1, 2028; this calculator is only an IBR scenario estimate.

According to HHS ASPE Poverty Guidelines, the 2026 poverty-guideline table gives $15,960 for one person and adds $5,680 for each additional person in the contiguous 48 states and DC.

For a focused fixed-rate comparison that does not use income-plan assumptions, the loan payment calculator can provide another scenario view.