Loan Calculators

Three free calculators: the true cost of a payday advance, the monthly payment on an installment loan, and the slack your next paycheck can actually carry.

Three calculators, one rule: show the number your budget actually cares about. The payday calculator turns a state fee ceiling into a flat dollar cost and an annualized APR. The installment calculator prices the fixed monthly payment above the payday ceiling, where APRs run from about 6.63% to 225%. The slack check answers the question lenders skip: what size repayment does your next paycheck actually carry?

Nothing you type leaves your browser. When the numbers look right, the rates and fees table shows what your state allows, and the request form prices a real offer with no fee to apply.

Payday Loan Cost Calculator

State caps price payday advances as a fee per $100 borrowed. Pick your amount, the fee your state charges, and the term in days. The APR line annualizes that fee, which is why the number looks large: the flat fee is what actually leaves your account.

Loan amount ($100-$1,000) Fee per $100 ($10-$30) Term in days (7-31)

Fee$75.00

Total due on payday$575.00

Annualized APR391%

Your state page lists the exact fee regime; the full comparison is in the rates and fees table.

Installment Loan Payment Calculator

Above the payday ceiling, borrowing becomes an installment product priced in APR. Set the amount, the APR, and the term to see the monthly payment, the total of payments, and what the borrowing actually costs in interest.

Loan amount ($100-$35,000) APR % (5-225) Term in months (3-24)

Monthly payment$305.82

Total of payments$1,834.89

Total interest$534.89

Typical online installment pricing runs from about 6.63% to 225% APR. The installment hub and the $1,200-$1,400 guide explain how to compare offers.

Paycheck Slack Calculator

Lenders verify that you have income; almost none verify that the repayment fits your other obligations. This check closes that gap. The affordable advance is the slack left in your next paycheck after essentials and other debts, whatever the lender would approve.

Net paycheck, $ Essentials, $ Other payments due, $

Your slack: the affordable advance$250.00

Leave this number positive before you borrow. The full method is in the affordability check guide.

Dedicated calculator pages

Payday Loan Calculator · fee, total due, true APR
Cash Advance Calculator · the cost before you commit
Installment Loan Calculator · monthly payments by APR
Personal Loan Calculator · payments from $1,000 to $35,000
APR Calculator · turn any loan fee into an APR

Frequently asked questions

Are these calculators free to use?

Yes, all three run entirely in your browser. Nothing you type is sent anywhere, there is no sign-up, and using them never shares information with lenders.

How is the payday loan APR calculated?

The calculator annualizes the fee: fee divided by amount, multiplied by 365 divided by the term in days. A $75 fee on a $500 advance over 14 days is 391% APR. The APR describes the cost of time; the flat fee is what actually leaves your account.

Which loan term should I use?

For a payday advance, the term is one pay cycle, usually 7 to 31 days. For an installment loan, terms run 3 to 24 months. A shorter term raises the payment and lowers the total interest; a longer term does the opposite.

Why does my lender's offer differ from the calculator?

The payday calculator applies statutory fee ceilings, and lenders may price below them. Installment lenders bundle origination fees or ancillary products differently. Use the calculator results as the comparison baseline and read the lender's own disclosure before accepting.

What if my paycheck slack number is negative?

Then a repayment at that size does not fit your budget and the loan will likely start a rollover cycle. Price a smaller amount, or read our alternatives guide: credit union payday alternative loans and extended payment plans are cheaper exits.

Reviewed by Marcus Bell, Reviewer, credit counseling background. Every fee, cap, and formula on this page was checked against the published state rules.

Last reviewed: 2026-09-26