30k Personal Loan Monthly Payment Calculator

Use this calculator to estimate the monthly payment on a $30,000 personal loan from the APR and repayment term you enter. It also estimates total interest using a fixed-rate, monthly-payment formula; your lender’s actual figures may differ because fees and other terms are not included.

Formula

The calculator uses the standard level-payment formula for a fixed-rate loan with monthly payments:

Monthly payment = P × r ÷ [1 − (1 + r)⁻ⁿ]

• P is the loan principal, in dollars.
• r is the monthly interest rate, calculated as APR ÷ 1,200. APR is entered as a percentage per year; dividing by 100 converts it to a decimal, and dividing by 12 converts it to a monthly rate.
• n is the number of monthly payments, calculated as loan term in years × 12.

The payment is rounded to the nearest cent. Estimated total interest is the rounded monthly payment multiplied by the number of payments, minus the original principal. This follows the calculator’s displayed payment; an actual lender may handle the final payment or rounding differently.

Worked Example

With the defaults—$30,000 borrowed, 8% APR, and a five-year term—the term is 5 × 12 = 60 monthly payments. The monthly rate is 8 ÷ 1,200 = 0.0066667.

Substitute these values into the formula:

Payment = 30,000 × 0.0066667 ÷ [1 − (1 + 0.0066667)⁻⁶⁰] = $608.29 per month

Using the rounded payment, estimated total payments are $608.29 × 60 = $36,497.40. Subtracting the $30,000 principal gives estimated total interest of $6,497.40. These are illustrative calculations, not a quoted offer.

Assumptions

• The APR stays fixed throughout the repayment term.
• Payments are equal, made monthly, and begin one month after the loan is issued.
• Interest is compounded monthly at APR ÷ 12.
• The calculation excludes origination or other fees, taxes, insurance, PMI, and escrow; these are not inputs in this calculator.

How to Use the Estimate

Enter the amount you expect to borrow, the APR shown in the lender’s disclosure, and the repayment term. The calculator reports a monthly principal-and-interest payment and the estimated interest across the full schedule. For a $30,000 loan, changing either APR or term changes the payment: a higher APR raises the payment when the term is unchanged, while a longer term generally lowers each scheduled payment but increases the number of payments.

For example, the $608.29 figure above is tied specifically to an 8% APR and a five-year term. It is not a universal payment for every $30,000 personal loan. Enter the actual rate and term from the offer you are evaluating. If the lender quotes an amount financed below $30,000 because a fee is withheld, or adds a fee to the balance, use the principal that will actually be repaid rather than assuming the advertised amount is the full calculation base.

The displayed amount is not necessarily the complete monthly cost of borrowing. A fee paid upfront may affect the money you receive without changing the scheduled principal-and-interest formula; a fee added to the loan balance can affect the payment because it increases principal. Check the lender’s itemized disclosure for the amount financed, payment schedule, total of payments, and any charges not represented here.

What Changes the Payment?

• Principal: A larger amount borrowed increases the payment when APR and term are fixed.
• APR: Interest is part of each payment. A different APR changes the interest calculation over every month of the schedule.
• Term: Spreading repayment over more months usually reduces the scheduled monthly amount, but interest has more time to accrue. Compare total interest as well as the monthly figure.
• Fees and payment details: Upfront charges, financed fees, unusual first-payment timing, or a variable rate can make the actual schedule differ from this fixed-rate estimate.

A common misconception is that the monthly payment alone tells you the total cost. It does not: two repayment schedules can have different monthly payments and different total interest. Another is that APR and the monthly interest rate are interchangeable. They are not; for this formula, an APR entered as 8 means a monthly rate of 8 ÷ 1,200, not 8% each month.

Limits and Common Calculation Errors

This calculator models a fully amortizing loan: each scheduled payment covers interest due and reduces principal, with the balance reaching zero after the final payment under the stated assumptions. It does not model a variable APR, skipped or late payments, extra principal payments, payment holidays, or a lender’s fee structure. If any of those apply, the lender’s payment schedule is the more relevant source for exact amounts.

• Enter APR as a percentage, such as 8 for 8%, not as 0.08.
• Enter the term in years because the calculator converts it to months. A five-year term means 60 payments, not five.
• Use the amount being financed as the principal. Do not subtract a fee twice or include it when it is paid separately.
• Expect small differences if a lender rounds interest daily, uses a different first-payment date, or adjusts the final payment.

Frequently Asked Questions

How much is the monthly payment on a $30,000 personal loan?
The payment depends on APR and term. At the calculator’s example inputs of 8% APR and five years, it is $608.29 per month before any costs not included in the formula.

How much interest would I pay on a $30,000 loan?
At 8% APR over 60 monthly payments, this estimate gives $6,497.40 in total interest, based on the rounded $608.29 payment. A different APR, term, or payment schedule changes the result.

Does a longer loan term lower the monthly payment?
For the same principal and APR, a longer term generally lowers the scheduled monthly payment because repayment is spread over more months. It can increase total interest because the balance is repaid over a longer period.

Is APR the same as the monthly interest rate?
No. APR is entered as a yearly percentage. This calculator divides it by 1,200 to get the monthly rate used in the formula. The APR may also reflect certain borrowing costs under a lender’s calculation, but this calculator does not separately model fees.

Does this estimate include loan fees?
No. It calculates scheduled principal and interest only. Fees may be paid separately or included in the financed balance, so check the lender’s disclosure and use the correct principal for an estimate.

This result is an estimate; the lender’s disclosure gives the exact figures.

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in p | Loan amount | $ | 30000 | 1 | 100000000
in apr | Interest rate (APR) | % | 8 | 0.01 | 100
in yrs | Loan term | years | 5 | 0.0833 | 50
out pmt | Monthly payment | $ | round(p * (apr / 1200) / (1 - (1 + apr / 1200) ^ -(yrs * 12)), 2) | 2
out int | Total interest | $ | pmt * yrs * 12 - p | 2