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Invoice Factoring Calculator

What a 3% fee actually costs as an annual rate.

Calculate invoice factoring cost: advance, reserve, fees and the effective APR on the money you actually received, to compare against a credit line.

Written and maintained by Mohit PatelLast checked August 12, 2026How we build these
$
%

The share paid up front. The rest is held as a reserve until your customer settles.

%
days

Commonly 30, sometimes 15. Shorter periods make late payment much more expensive.

$

Effective APR

42.9%

on the $8500.00 you actually received

Advance on day one$8500.00
Reserve held back$1500.00
Periods charged1.00
Total fees−$300.00
Rebate when your customer pays$1200.00
Net proceeds$9700.00
Cost as a share of the invoice3.00%
Effective APR42.9%
For scale, 2/10 net 30 annualises to37.2%

The APR is measured against the advance, not the invoice, because the advance is the capital you had the use of. Compare it with a credit line before deciding: factoring is expensive money, which is sometimes still the right money.

How the Invoice Factoring Calculator works

Factoring is quoted as a small percentage for a short period, which is exactly why it is hard to compare with anything else. Three percent for thirty days is not a 3% cost of money: you only received the advance, not the whole invoice, and you only had it for a month. Annualised on that basis the same deal is somewhere above 40%, which is the number to hold against a credit line.

Also known as: receivables factoring calculator · invoice discounting calculator · AR factoring calculator

Not financial advice. Marketplace fees change, and they vary by country, plan and seller status. Every rate here is an editable default, not a quoted price, check the platform's current fee schedule before you price a product against it. This is not tax or business advice.

Frequently asked questions

How is invoice factoring cost calculated?

A fee, usually a percentage of the invoice per 30-day period, charged until the customer settles. You receive an advance of perhaps 80-90% immediately, and the remaining reserve, less the fees, when payment lands.

What is the effective APR of factoring?

The fee divided by the advance, annualised over the days outstanding. A 3% fee on a 30-day invoice at an 85% advance is roughly 43% a year, because the fee is measured against the 85% you actually got rather than the full invoice.

Why does paying on day 31 cost so much more?

Most agreements charge whole periods rather than pro rata, so a single day past the boundary triggers a second full period and can nearly double the fee. Check whether yours prorates, because on slow-paying debtors that clause is the whole cost.

Is factoring worth it?

It is expensive money, and sometimes the right money. If the cash unlocks a purchase order you could not otherwise fund, the return on that order is what it should be judged against, not the APR in isolation. If it is covering a permanent working-capital gap, a credit line is almost always cheaper.

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