Are installments always equal?

This tool splits the amount after your upfront payment into equal installments. You can model uneven milestones by running multiple scenarios or using invoicing software with custom schedules.

Does this include interest or financing?

No—this is a simple principal split. For interest-bearing payment plans, you would need an amortization or loan calculator to include finance charges.

How do deposits affect cash flow?

Upfront payments improve cash flow and reduce delivery risk. The calculator shows how much remains to bill in equal chunks so you can align work phases with incoming cash.

Payment Schedule Calculator

Enter contract value, optional deposit, and number of installments to see each payment and a running cumulative total.

Milestone billing

Split the remaining balance into equal installments after an optional upfront payment.

Contract / project total ($)

Upfront / deposit ($)

Number of equal installments

Each installment

$2500.00

4 payments after $2000.00 upfront · Financed: $10000.00

Schedule

Deposit / upfront$2000.00(cum. $2000.00)
Installment 1$2500.00(cum. $4500.00)
Installment 2$2500.00(cum. $7000.00)
Installment 3$2500.00(cum. $9500.00)
Installment 4$2500.00(cum. $12000.00)

Milestone billing basics

Large projects rarely bill 100% on delivery. Milestone billing ties payments to phases—kickoff, design approval, go-live—which protects both sides. A deposit covers early effort and materials; the remainder spreads risk across the engagement. Clear schedules belong in your contract and should match how you recognize revenue for accounting (your CPA can advise).

Use this calculator to translate a total contract value into a simple deposit plus equal installments. For more context, explore milestone invoicing and progress invoicing in our hub, and compare rates with the freelance rate calculator.

Frequently Asked Questions

Automate milestone invoices

With Billed you can invoice on your schedule, track what is paid, and keep every project’s payment history in one place.

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