How to use the personal loan payment calculator
Enter the numbers from one written offer at a time. The fee treatment matters as much as the fee itself, so check the offer for how the lender handles it.
Extra payments are optional. Add one only if your loan lets you pay principal early without a charge.
- Enter the loan amount and the fixed interest rate from the offer.
- Enter the term in months.
- Enter the origination fee and choose whether it's deducted from your proceeds, added to the balance or paid upfront.
- Add a recurring extra principal payment if you plan to pay more each month.
- Calculate, then compare the required payment, cash received, total borrowing cost and payoff time.
Personal loan example: $8,000 with a $400 fee
An $8,000 loan at 11.5% for 36 months has a required payment of $263.81. The first month's interest is $76.67. Over three years you pay $9,497.09, which is $1,497.09 of interest.
With a $400 fee deducted from proceeds, $7,600 lands in your account. Interest plus the fee comes to $1,897.09, or about 25% of the cash you got. The term changes the cost too:
| Term | Monthly payment | Total interest | Total loan payments |
|---|---|---|---|
| 24 months | $374.72 | $993.34 | $8,993.34 |
| 36 months | $263.81 | $1,497.09 | $9,497.09 |
| 48 months | $208.71 | $2,018.18 | $10,018.18 |
| 60 months | $175.94 | $2,556.45 | $10,556.45 |
Personal loan payment formula
The payment uses the standard fixed-rate amortization formula on whatever balance you actually owe. That's the requested amount, plus the fee if it's added to the loan. At 0% interest the payment is the balance divided by the months, though any fee still counts toward the cost.
Amount financed P = requested amount + fee (only if added to the balance)Net proceeds = requested amount - fee (only if deducted)Monthly rate r = annual rate / 100 / 12Required payment = P x r / (1 - (1 + r)^(-n))Total borrowing cost = interest paid + origination fee
How an origination fee changes what you get
An origination fee is the lender's charge for making the loan. There are three common ways to pay it, and each one changes a different number.
If you need a set amount of cash and the fee is a percentage taken from the loan, divide what you need by one minus the fee rate. To net $8,000 after a 5% fee, you'd have to borrow about $8,421.05, subject to the lender's approval.
| Fee treatment | Cash you receive | Monthly payment | Total borrowing cost |
|---|---|---|---|
| Deducted from proceeds | $7,600.00 | $263.81 | $1,897.09 |
| Added to the balance | $8,000.00 | $277.00 | $1,971.94 |
| Paid separately upfront | $8,000.00 | $263.81 | $1,897.09 |
Debt consolidation loan calculator: does it save money?
A consolidation loan saves money only if its full cost, fee included, beats what the old debts would cost to pay off. Lower payments alone don't prove that. A longer term can cut the payment and still cost more in total.
Here's a simple comparison. Say you owe $8,000 on a card at 22% and pay $263.81 a month. It takes 45 months and $3,789.27 of interest to clear. The $8,000 personal loan above clears in 36 months for $1,897.09 including the fee. Run your own debts through the debt payoff calculator, then put the loan offer in here and compare the two totals.
Paying off a personal loan early
Extra principal shrinks the balance sooner, so every later month charges less interest. On the $8,000 example, an extra $50 a month ends the loan in 30 months and saves $280.11. An extra $100 a month ends it in 25 months and saves $469.94.
Before counting on those savings, check three things in your agreement: whether there's a prepayment penalty, whether extra money goes to principal or to future payments, and how interest is calculated. Loans with precomputed interest may not reward early payment the same way.
Limits and warning signs
This is a planning estimate for a fixed-rate monthly loan. It doesn't check credit, quote rates or decide whether a loan suits you. Daily interest, odd first periods and lender rounding can make the contract slightly different.
Be wary of any lender that guarantees approval and asks for money before you get the loan. The FTC lists that as a sign of an advance-fee loan scam.
- Enter the interest rate, not the APR. APR includes the fee, so you'd count it twice.
- Variable rates, balloon payments and payment protection add-ons aren't modeled.
- Compare offers that give you the same usable cash.
- Check the final numbers against the lender's disclosures before you sign.
Sources
These CFPB and FTC pages explain installment loans, APR, comparing loan costs and advance-fee scams.