Free installment planning tool

Customer Payment Plan Calculator

Turn a customer balance into a clear installment amount, interest cost and dated payment schedule before offering payment terms.

Simple calculator

Build the payment plan

Updates live

Customer balance

Invoice / purchase amount

Down payment

Payment terms

Annual interest rate

% APR

Number of payments

payments

Payment frequency First payment date

Amortizing installment The regular payment is calculated to pay the financed balance to zero over the selected number of payments at the entered APR.

Payment result

Customer installment

Regular installment amount $393.56 12 monthly payments

Amount financed$4,500

Plan amortizes fully

Total interest$223

Total of installments$4,723

Total customer cash outlay$5,223

Interest as % of financed balance5.0%

First payment—

Final scheduled payment—

OfficeQ readout

After the $500 down payment, the remaining $4,500 balance is repaid in 12 equal monthly installments with interest.

Payment schedule

Installment-by-installment breakdown

Simple plan

#	Due date	Beginning balance	Payment	Interest	Principal	Ending balance

Advanced calculator

Model the full customer payment plan

Full amortization

Balance & fees

Invoice / purchase amount

Down payment

Financed setup / admin fee

Upfront fee paid separately

Financing terms

Annual interest rate

% APR

Number of payments

payments

Payment frequency First payment date

Final payment structure

Balloon payment at end

Added to the final regular installment. Optional late-payment charge

Displayed for policy planning only. It is not included in the scheduled payment. Grace period

days

Displayed in the plan summary only.

Business planning

Business cost of capital

% / year

Estimated default / nonpayment risk

Recovery if default occurs

Advanced installment The regular installment is solved using the financed balance, periodic APR and any balloon amount due with the final payment. Financed fees are included in principal; upfront fees are not.

Advanced result

Payment-plan economics

Regular installment amount $400.12 12 monthly payments

Amount financed$4,575Balance after down payment + financed fee

Final payment including balloon$400.12—

Total interest$226

Total scheduled payments$4,801

Total customer cash outlay$5,326

Expected default loss$69

Estimated financing carrying cost$170

Interest less expected risk/carry cost-$13

Plan terms snapshot5-day grace · $25 late charge

Down payment$500

Upfront fee$25

Financed fee$75

Balloon payment$0

OfficeQ readout

The plan converts the customer balance into fixed installments while separately showing interest income, fees, carrying cost and expected credit loss.

Advanced payment schedule

Full amortization schedule

Final payment includes balloon if entered

#	Due date	Beginning balance	Scheduled payment	Interest	Principal	Balloon	Ending balance

Term sensitivity

Payment amount at different plan lengths

Same APR and financed balance

Number of payments	Regular installment	Total interest	Total scheduled payments	Customer cash outlay	Signal

APR sensitivity

Payment and interest at different rates

Same term and balance

APR	Regular installment	Total interest	Total scheduled payments	Interest % of financed balance

Reading the result

Payment plans change both customer affordability and the seller’s cash timing.

A longer installment term usually lowers each payment but increases the time the seller waits to collect cash and, when interest is charged, increases total interest paid by the customer.

The Advanced model separates customer interest from the business’s cost of carrying the receivable and expected nonpayment risk. That helps distinguish a payment plan that merely feels affordable from one that also makes economic sense for the seller.

InstallmentThe recurring payment required to amortize the financed balance over the selected term.

Total interestTotal scheduled payments plus balloon, less the amount originally financed.

Payment scheduleA period-by-period breakdown of interest, principal and the remaining balance.