Student Loan Calculator
With amount borrowed 27000 usd, interest rate 6.53 percent, origination fee 1.057 percent, years still studying 4 years and 2 more fields, student loan comes to $397.20 — monthly payment. It is reached in 10 steps, the last of which is 34933.95 * 0.0054417 / (1 - pow(1 + 0.0054417, -120)), and each one is printed on the page with its numbers filled in. The formula is the one published by Federal Student Aid, not an approximation fitted to it.
What a student loan costs to repay, including interest that builds while you are still studying and the salary the payment implies you need.
Formula and sources checked · How we check
Amount borrowed 27000, Interest rate 6.53, Origination fee 1.057, Loan type Unsubsidized — interest builds from day one
$397.20
Monthly payment for the example below. Editing a field recomputes the calculator below; this figure holds the answer the page was loaded with.
It is written into the HTML rather than drawn by a script, so a search engine reading this page without running JavaScript still finds an answer.
- Origination fee
27000 * 1.057 / 100$285.39- What actually reaches the school
27000 - 285.39$26,715- Interest built up before the first payment
27000 * 6.53 / 100 * 4.5$7,934- Balance when repayment starts
27000 + 7933.95$34,934- Monthly payment
34933.95 * 0.0054417 / (1 - pow(1 + 0.0054417, -120))$397.20- Total repaid
397.20138 * 120$47,664- Total interest
47664.166 - 27000$20,664- Repaid per dollar received
47664.166 / 26714.611.784- Interest a month while you are still studying
27000 * 6.53 / 100 / 12$146.92- Salary that keeps the payment under 8% of gross pay
397.20138 * 12 / 0.08$59,580
Ask about this in the chatCompare: subsidised against unsubsidised
Worked example
$27,000 at 6.53% arrives as $26,715 after the 1.057% origination fee. Unsubsidised, four years of study and a six-month grace add $7,934 of interest before the first bill, so repayment starts on $34,934 and the standard ten-year payment is $397.20. Total repaid is $47,664 — $1.78 for every dollar that reached the school.
How to work it out yourself
- 1.Borrow the subsidised amount first if you are offered both. On an unsubsidised loan the interest clock starts at disbursement, and four years of it before you have earned a dollar is the part that surprises people.
- 2.Paying even the interest while studying stops the balance growing. On the figures above that is $146.93 a month, and it removes every dollar of the pre-repayment interest.
- 3.Use the salary line as a borrowing limit rather than a forecast. Financial-aid offices treat a payment above 8% of gross pay as the point where repayment stops being manageable.
- 4.Federal income-driven plans cap the payment at a share of discretionary income instead, which this fixed-term arithmetic does not model. They lower the payment and usually raise the total.
Payment and total cost by repayment term
| Repayment term (years) | Monthly payment | Monthly payment | Total interest |
|---|---|---|---|
| 5 | $684.01 | $684 | $14,041 |
| 10 | $397.20 | $397 | $20,664 |
| 15 | $304.89 | $305 | $27,880 |
| 20 | $261.08 | $261 | $35,658 |
| 25 | $236.53 | $237 | $43,960 |
| 30 | $221.50 | $221 | $52,739 |
Stretching the term is the cheapest way to make a payment affordable and the most expensive way to repay a loan.
The formula
- Origination fee
27000 * 1.057 / 100 - What actually reaches the school
27000 - 285.39 - Interest built up before the first payment
27000 * 6.53 / 100 * 4.5 - Balance when repayment starts
27000 + 7933.95 - Monthly payment
34933.95 * 0.0054417 / (1 - pow(1 + 0.0054417, -120)) - Total repaid
397.20138 * 120 - Total interest
47664.166 - 27000 - Repaid per dollar received
47664.166 / 26714.61 - Interest a month while you are still studying
27000 * 6.53 / 100 / 12 - Salary that keeps the payment under 8% of gross pay
397.20138 * 12 / 0.08
Source: Federal Student Aid — interest rates and fees, Federal Student Aid — repayment plans, CFPB — student loans
Questions people actually ask
- How much interest builds up while I am in school?
- On an unsubsidised loan, the rate times the balance, every year, from disbursement — including the grace period. On $27,000 at 6.53% over four years plus a six-month grace, that is $7,934 added before repayment begins. Subsidised loans have that interest paid for you while you are enrolled at least half-time.
- What is the origination fee?
- A percentage taken off each federal disbursement before it reaches the school, currently 1.057% on Direct Subsidized and Unsubsidized loans. You repay the full amount borrowed, so the fee is real money — $285 on a $27,000 loan.
- Should I take the longer repayment plan?
- Only if the standard payment does not fit. A 20-year term on the same balance cuts the monthly payment by roughly a third and more than doubles the interest. The longer plan is a cash-flow tool, not a saving.
- Is refinancing federal loans a good idea?
- It buys a lower rate and gives up income-driven repayment, forgiveness programmes, and the death and disability discharge. For a borrower with stable high income and no interest in public-service forgiveness the trade can pay; for anyone else it is a one-way door.
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