Your monthly payment depends on which repayment plan you choose, your total loan balance, and your interest rate

There is no single answer to how much you will pay each month because federal student loans offer multiple repayment plans, and each one calculates your payment differently. A borrower with $30,000 in loans might pay $300 a month on one plan and $150 on another. Private student loans work differently still — your lender sets the payment based on the loan amount, interest rate, and how many years you choose to repay.

The payment you see is not fixed forever. On income-driven plans, your payment changes each year based on your earnings. On standard plans, it stays the same for the life of the loan. Before you can know what you will actually pay, you need to know which plan you are on or which one you are considering.

Key Takeaways

  • Federal loans offer six repayment plans with different monthly amounts: Standard (fixed payment over 10 years), Income-Based, Pay As You Earn, Revised Pay As You Earn, and Income-Contingent.
  • Income-driven plans calculate your payment as a percentage of your discretionary income (roughly your gross income minus 150% of the federal poverty line for your family size), so two people with the same loan balance can have very different payments.
  • Private student loans have no standard plans — your payment is set by your lender based on the interest rate and repayment term you choose when you borrow.
  • You can change your repayment plan once per year, so if your payment is too high now, you may be able to lower it by switching plans.
  • Your actual payment includes principal (the money you borrowed) and interest (the cost of borrowing), and the split between them changes over time.

How federal repayment plans calculate your monthly payment

The Standard Repayment Plan is the simplest: you pay a fixed amount every month for 10 years. The payment is calculated by dividing your total loan balance by 120 months, plus interest. If you have $30,000 in federal loans at an average interest rate of 5%, your Standard payment would be roughly $283 per month. This amount never changes, and you pay off the loan in exactly 10 years.

Income-driven plans work the opposite way. Instead of a fixed payment, you pay a percentage of your discretionary income. Discretionary income is your gross income minus 150% of the federal poverty line for your family size. On Income-Based Repayment (IBR), you pay 10% to 15% of discretionary income depending on when you took out your loans. On Pay As You Earn (PAYE), you pay 10%. On Revised Pay As You Earn (REPAYE), you also pay 10%. On Income-Contingent Repayment (ICR), you pay 20%.

This means your payment is recalculated every year when you recertify your income. If you earned $40,000 last year and are single with no dependents, your discretionary income is roughly $28,000 (after subtracting the poverty line of about $12,000). At 10%, your payment would be around $233 per month. If you earned $50,000, your payment would jump to around $317. If you lost your job and earned nothing, your payment could drop to $0.

What happens when your payment does not cover the interest

On income-driven plans, your monthly payment might be lower than the interest that accrues each month. If your loan balance is $50,000 at 6% interest, roughly $250 in interest accrues each month. If your income-driven payment is only $150, the unpaid interest gets added to your balance — a process called capitalization. Your loan grows even though you are making payments.

Federal loans offer some protection here. On PAYE and REPAYE, the government will not capitalize more than 10% of your original loan balance. On IBR and ICR, there is no cap. If you stay on an income-driven plan long enough and make all your payments, any remaining balance is forgiven after 20 to 25 years, depending on the plan. That forgiveness may be taxable income in the year it happens.

How private student loan payments are set

Private lenders do not offer income-driven plans. When you borrow from a bank or online lender, you choose a repayment term — usually 5, 10, 15, or 20 years — and the lender calculates a fixed monthly payment based on the loan amount, your interest rate, and that term.

A $30,000 private loan at 6% interest over 10 years costs about $300 per month. The same loan over 20 years costs about $180 per month. Over 5 years, it costs about $580 per month. The longer the term, the lower the payment — but you pay more interest overall because you are borrowing the money for longer.

Some private lenders offer income-driven or interest-only payments during school or for a limited time after graduation, but these are temporary. Once the grace period ends, you move to a fixed payment schedule. Private loans also do not offer forgiveness programs, so you will pay back every dollar you borrowed plus interest.

How to find out what your specific payment will be

For federal loans, log into your account at studentaid.gov. You will see your loan balance, interest rate, and current repayment plan. The site shows your current monthly payment and lets you estimate what it would be on other plans. You can use the Repayment Estimator tool to see payments under each income-driven plan based on your actual income.

For private loans, log into your lender's website or call the customer service number on your loan documents. They can tell you your current payment, current balance, and interest rate. If you want to see what a different repayment term would cost, most lenders have a calculator on their website, or you can ask a representative to run the numbers.

If you have not yet borrowed and are trying to estimate what a loan will cost, use the Federal Student Loan Calculator on studentaid.gov for federal loans, or ask a private lender for a loan estimate before you accept the money.

When your payment changes without you choosing a new plan

On income-driven plans, your payment changes every year when you recertify your income. You will receive a notice asking you to update your income information, usually in the month your plan year ends. If you do not recertify, your payment may jump to 20% of discretionary income or revert to the Standard Plan amount — a significant increase.

On Standard and other fixed-payment plans, your payment stays the same every month until the loan is paid off. However, if you have unpaid interest that capitalizes, your loan balance grows, which means you will be paying for longer than originally planned.

If you consolidate your loans — combining multiple federal loans into one — your new payment is recalculated. Consolidation can lower your payment by extending the repayment term, but you will pay more interest over the life of the loan.

Factors that make your payment higher or lower

Your loan balance is the biggest factor. A $20,000 loan costs less per month than a $50,000 loan on the same plan. Your interest rate matters too — a loan at 3% costs less per month than one at 7%, even with the same balance. The repayment term (how many years you have to pay) directly affects your payment: longer terms mean lower monthly payments but more total interest paid.

On income-driven plans, your income and family size are the main factors. A married borrower with two children has a higher poverty line than a single borrower, which means more discretionary income is excluded from the calculation, which means a lower payment. A borrower who loses income or has a child can request a recalculation outside the normal annual cycle.

Your loan type also matters. Parent PLUS loans cannot use most income-driven plans — they are limited to Income-Contingent Repayment or consolidation into a Direct Consolidation Loan. Graduate loans have the same plans as undergraduate loans but may have different interest rates.

Frequently Asked Questions

Can I pay more than my monthly payment without penalty?

Yes. Federal and private loans allow you to pay extra toward principal at any time without penalty. Extra payments reduce your balance faster and save you interest over the life of the loan. Some borrowers pay an extra $50 or $100 per month; others make lump-sum payments when they receive a bonus or tax refund.

What if I cannot afford my monthly payment?

For federal loans, you can switch to an income-driven plan, which may lower your payment to $0 if your income is very low. You can also request a deferment or forbearance, which temporarily pauses payments. For private loans, contact your lender to ask about hardship options — these vary by lender and may include temporary payment reduction or deferment.

Does paying off my loan early save me money?

Yes. If you pay off a loan faster, you pay less total interest. A $30,000 loan at 5% costs roughly $8,000 in interest over 10 years but only $4,000 over 5 years. However, some private loans charge prepayment penalties, so check your loan documents before paying extra.

How do I know if I am on the right repayment plan?

The right plan depends on your income, family size, and how quickly you want to pay off the loan. If you earn a stable income and can afford the Standard payment, it costs less total interest. If your income is low or variable, an income-driven plan may be better. You can change plans once per year, so you can try one and switch if it does not work for you.

Will my payment change if interest rates change?

Federal student loan interest rates are set by Congress and do not change after you take out the loan. Your rate stays the same for the life of the loan. Private loan rates may be fixed or variable — if variable, your rate and payment can change when the market rate changes. Check your loan documents to see whether your rate is fixed or variable.