Key Takeaways
- • A $35,000.00 unsubsidized student loan at 6.53% over 10 years has a monthly payment of about $410.95.
- • During the 6-month grace period, $1,142.75 of interest is capitalized onto your balance. You'll pay $14,313.46 in total interest (29% of total repayments), for a total cost of $49,313.46.
- • At this pace the loan is paid off around Jan 2037. Even a small extra monthly payment or interest-only payments during the grace period cut the interest you pay.
Why Use Our Student Loan Calculator?
Grace-Period Aware
See exactly how much interest capitalizes during your grace period on unsubsidized loans — and how subsidized loans avoid it.
Real Payoff Date
Get the month you'll actually be debt-free, including the grace period and any extra payments you make.
Extra-Payment Savings
Watch how a little more each month shaves years off your loan and saves thousands in interest.
Compare Scenarios
Save up to three what-if scenarios side by side to compare terms, rates and loan types before you commit.
Full Amortization
Drill into a month-by-month schedule showing how each payment splits between principal and interest.
Free & Private
Everything runs in your browser — no sign-up, no personal data collected, and instant results.
How to Calculate Your Student Loan Payment
Enter Your Loan Amount
Add up the total you've borrowed across all loans, or model one loan at a time.
Set the Rate, Term & Type
Enter your interest rate, choose a repayment term, and pick subsidized or unsubsidized so grace interest is handled correctly.
Add Your Grace Period
Most federal loans give a 6-month grace period after you leave school. Set it to zero if you're already in repayment.
See Your Results Instantly
Your monthly payment, total interest, payoff date and a full breakdown update the moment you change an input.
Example: $35,000 Unsubsidized Loan
Understanding Student Loans
Student loans help finance higher education but can become a significant financial burden after graduation. Understanding how your loans work, including grace periods and interest accrual, is crucial for effective repayment planning.
This calculator helps you understand the true cost of your student loans, including interest that accrues during the grace period. Use it to compare different repayment strategies and find the most affordable path to becoming debt-free.
Types of Student Loans
- •Direct Subsidized Loans: Government pays interest while you're in school and during grace period. Based on financial need.
- •Direct Unsubsidized Loans: Interest accrues from disbursement. Not based on financial need.
- •PLUS Loans: For graduate students and parents. Higher interest rates and fees.
- •Private Student Loans: From banks and credit unions. Terms and rates vary widely.
The Impact of Grace Period Interest
During your grace period, interest continues to accrue on unsubsidized loans. When repayment begins, this accrued interest is capitalized (added to your principal balance), which means you'll pay interest on the interest.
Subsidized Loans
The government covers interest during the grace period. Your loan balance stays the same until repayment begins.
Unsubsidized Loans
Interest accrues during grace period and gets added to your balance. This increases your total debt and monthly payments.
Making interest-only payments during your grace period can prevent capitalization and save you money over the life of the loan.
Student Loan Repayment Strategies
Avalanche Method
Pay minimums on all loans, then put extra money toward the loan with the highest interest rate. Saves the most money on interest.
Snowball Method
Pay off smallest balances first for psychological wins. Less efficient financially but can provide motivation to continue.
Income-Driven Plans
Federal programs that cap payments at a percentage of discretionary income. May qualify for forgiveness after 20-25 years.
Refinancing
Get a lower interest rate from a private lender. Good credit required. Loses federal loan protections.
Loan Consolidation
Combine multiple federal loans into one. Simplifies payments but may lose some benefits like interest rate discounts.
Employer Assistance
Some employers offer student loan repayment assistance as a benefit. Up to $5,250 per year can be tax-free.
10-Year vs 15-Year vs 20-Year Repayment: Which Is Better?
A shorter term means a higher monthly payment but far less interest; a longer term lowers the payment but costs you much more overall. On a $35,000 loan at 6.53%, choosing the Standard 10-year plan over a 25-year extended plan raises the payment by about $161/month but saves roughly $23,300 in total interest. Here's how common repayment terms compare:
| $35,000 at 6.53% | Monthly Payment | Total Interest | Total Paid |
|---|---|---|---|
| Standard · 10 yr | $398 | $12,754 | $47,754 |
| Extended · 15 yr | $305 | $19,984 | $54,984 |
| Extended · 20 yr | $262 | $27,777 | $62,777 |
| Extended · 25 yr | $237 | $36,094 | $71,094 |
Standard · 10 yr
Extended · 15 yr
Extended · 20 yr
Extended · 25 yr
Principal & interest only on a $35,000 loan; excludes grace-period capitalization. Adjust the loan term above to compare your own numbers.
How We Calculate Your Student Loan Payment
Your monthly payment uses the standard amortization formula M = P · r(1+r)n / ((1+r)n − 1), where P is the loan balance at repayment, r is the monthly interest rate (annual rate ÷ 12), and n is the number of monthly payments (years × 12). Total repayment interest is the sum of the interest portion of every scheduled payment.
For unsubsidized and private loans, we add simple interest accrued during the grace period (P · r · grace months) to your balance — this is called capitalization — before calculating the payment, so you pay interest on that interest. For subsidized federal loans no grace interest is added, because the government covers it. Any extra monthly payment is applied straight to principal, which shortens the term and lowers total interest — reflected in the payoff date and interest-saved figures.
These results are estimates for planning and education, not a loan offer or financial advice. Federal loan rates, grace-period rules and repayment-plan options are set by the U.S. Department of Education — confirm the current figures for your loans at studentaid.gov.
Example Calculation
A $30,000 student loan at 5.5% repaid over the standard 10-year term costs about $326 a month, with roughly $9,120 in total interest.
- Loan balance
- $30,000
- Interest rate
- 5.5% APR
- Repayment term
- 10 years (120 months)
- Total repaid
- ≈ $39,120
- Total interest
- ≈ $9,120
Illustrative example for a standard repayment plan. Income-driven plans will differ.
Student Loan Calculator FAQs
What is a grace period for student loans?
A grace period is a set time after graduation (typically 6 months) before you must begin repaying your student loans. During this time, interest may still accrue on unsubsidized loans.
How does interest accrue during the grace period?
For unsubsidized federal student loans and most private loans, interest accrues during the grace period and is added to your principal balance when repayment begins. Subsidized federal loans do not accrue interest during the grace period.
Can I make payments during the grace period?
Yes, making payments during the grace period can reduce the total interest you pay over the life of the loan. Even small payments can make a significant difference.
What are the different student loan repayment plans?
Federal student loans offer several repayment plans including Standard (10 years), Graduated, Extended, Income-Driven (IDR), and Income-Based Repayment (IBR). Each has different monthly payments and total costs.
Should I refinance my student loans?
Refinancing can lower your interest rate but you will lose federal loan benefits like income-driven repayment plans and loan forgiveness programs. Consider your situation carefully before refinancing federal loans.
How can I pay off student loans faster?
Make extra payments toward principal, pay bi-weekly instead of monthly, use windfalls for extra payments, and consider refinancing to a lower rate. Always specify that extra payments should go toward principal.
What is student loan forgiveness?
Certain federal programs forgive remaining student loan balances after meeting specific requirements, such as Public Service Loan Forgiveness (PSLF) after 10 years of qualifying payments, or Teacher Loan Forgiveness.
How much student loan debt is too much?
A common rule of thumb is that your total student loan debt should not exceed your expected first-year salary. Your monthly payment should ideally be less than 10-15% of your gross monthly income. For example, on a $50,000 salary (about $4,167/month gross), aim to keep payments under roughly $625 per month. If your payment runs higher, a longer term, refinancing, or an income-driven repayment plan can bring it down.
How much will my monthly student loan payment be?
Your payment depends on the amount borrowed, the interest rate, the repayment term and whether grace-period interest has been capitalized. For example, a $35,000 unsubsidized loan at 6.53% over a standard 10-year term with a 6-month grace period works out to about $411 per month and roughly $14,300 in total interest. The same loan on a subsidized basis (no grace interest) is about $398 per month. Use the calculator above to see your exact figure, then compare it with our Personal Loan Calculator if you are weighing refinancing.
What are the current federal student loan interest rates?
Federal Direct Loan rates are set each year by the U.S. Department of Education and are fixed for the life of the loan. For the 2024-25 academic year, undergraduate Direct Subsidized and Unsubsidized Loans carry a 6.53% rate, graduate Unsubsidized Loans are 8.08%, and Direct PLUS Loans are 9.08%. Private student loan rates vary by lender and credit profile. Always confirm the latest rates at studentaid.gov before you borrow.