Loan Calculator

Borrow $20,000 and you might see just $19,000 actually hit your account. That missing $1,000 is an origination fee, skimmed off the top before the money ever reaches you, and nearly every loan calculator online quietly acts like it isn't there. That is exactly how people get talked into a worse deal than the one they think they signed. You still owe the full $20,000, you still pay interest on the full $20,000, so the real rate you are paying runs higher than the tidy number on the offer. This calculator refuses to hide that from you. It solves for the rate you are actually paying, the true APR, right beside everything else a loan calculator should give you.

Punch in what you are borrowing, the annual rate, and the term. You get the fixed monthly payment, the total you will really hand over across the whole loan, and how much of that is pure interest, which is usually the number that changes your mind about a deal. It is free, it recalculates the moment you stop typing, and every figure is worked out right in your browser, so nothing you enter is uploaded, logged, or sold to anyone, and a Share link keeps the amount you are borrowing after the # in it, the part a browser never sends to a server. No sign-up, no handing your details to a lender just to see a monthly payment. Try five versions of a loan before you ever pick up the phone.

1. Enter the loan amount, the principal you are borrowing before interest. Financing a purchase? Put in the price minus your down payment, the part you actually finance.
2. Enter the annual rate as a percent, like 7. The tool turns it into a monthly rate for you. A rate of 0 works and just splits the principal evenly.
3. Set the term. Type the years, and add months if it is not a round number of years, say 5 years and 6 months. The 3, 5, and 7 year buttons cover most auto and personal loans.
4. Read the payment, total paid, and total interest. Change any input and all three move at once.
5. Open the extra payments box to add money each month, once a year, or a lump sum today. You will see how many months early the loan clears and the interest that saves.
6. Open the fee and start date box to enter an origination fee. The tool then shows the fee in dollars, the cash you truly receive, and the true APR with the fee folded in.

This is where a bare-bones calculator leaves you exposed, and it is not by accident. An origination fee runs anywhere from 1% to 8% of what you borrow, and it does not get tacked onto your bill where you would spot it. It comes straight out of the money the lender sends over. So you sign for the full amount, your payment is built on the full amount, you pay interest on the full amount, and the cash that actually reaches you is smaller. You are financing money you never got to touch.

Put a real loan through it. Borrow $20,000 at a 7% rate over five years and the payment is $396.02 a month, figured on the whole $20,000. Add a 5% origination fee to that and $1,000 disappears up front, so what actually lands in your account is $19,000. You are repaying a $20,000 loan on $19,000 of usable cash, and that gap pushes your real cost up to a true APR near 9.17%, well past the 7% the offer advertised.

That gap is the entire reason APR exists as its own number. Two loans can advertise the identical interest rate, and the one with the bigger origination fee is quietly the pricier of the two. Compare offers by APR instead of the headline rate and you catch it. Type the fee in as a percent, the calculator handles the math, and you get to line loans up on the one number that decides what they truly cost.

Extra payments are the other big lever, and they pay you back harder than most people expect. Interest is charged on your remaining balance, so any extra dollar you push at the principal early does not just save this month's interest on that dollar. It wipes out every future month of interest that dollar would have racked up for the rest of the loan. One early payment keeps working for you for years.

Take a $25,000 loan at 6% over five years. The payment is $483.32, and left alone you would pay about $3,999 in interest. Add $100 a month in the extra payments box and the loan clears in roughly 49 months instead of 60, dropping the interest to around $3,206. That extra hundred, money you would barely miss, saves close to $800 and hands you eleven months of your life back.

Rounding your payment up to a flat number, dropping a tax refund on the balance, one extra payment every December, they all run on the same principle, and the tool models any mix and shows the new payoff date with the exact interest saved. Check one thing first, a handful of loans charge a prepayment penalty for paying ahead, which can eat into the win, so read that clause before you commit.

Every payment on an amortizing loan splits two ways. Part covers the interest that piled up that month, and the rest knocks down what you owe. The payment amount stays flat the whole term, but the split behind it shifts steadily, and that shift is the most useful thing to understand about any loan.

Interest gets charged on whatever you still owe, which is the most you will ever owe on day one, so your early payments are mostly interest with only a sliver landing on principal. As the balance falls the monthly interest falls with it, freeing up more of that same fixed payment to attack the principal. By the tail end almost the whole payment is principal, even though the dollar figure, that same $396 or $483, never changed.

The calculator builds the full schedule so you can watch it happen. Flip between a year-by-year view and the full month-by-month detail, or pull it down as a spreadsheet with the CSV button. Watch two things as you scroll: how stubbornly the balance holds near the top early on, and the crossover point where principal finally overtakes interest. On a long loan that crossover can take a third of the term to arrive.