Understanding dilution in invoice factoring
Dilution measures the portion of invoice value not collected due to credits, disputes, returns, or offsets. High dilution affects advance rates, reserve levels, and invoice eligibility.
- Dilution is not the same as bad debt. It includes credits, returns, and customer offsets that reduce collection even when the customer pays.
- High dilution can reduce advance rates, trigger reserve holds, or cause invoices to be ineligible.
- Factors calculate a dilution rate over a trailing period to set program terms.
- Controlling dilution requires addressing root causes such as billing errors, credit notes, and customer deduction habits.
Dilution is the difference between the face value of invoices submitted and the amount actually collected. A $10,000 invoice paid at $9,200 after a short pay represents 8% dilution on that invoice.
In factoring, dilution matters because the factor advances money before the customer pays. If dilution is higher than expected, the collected amount may fall short of what was advanced.
Factors typically measure dilution over a trailing period and use it to set advance rates, reserve requirements, and eligibility criteria.
Dilution rate
The percentage of gross invoice value not collected over a measured period. Calculated as total credits, disputes, returns, and short pays divided by total invoice value submitted.
Dilution calculation example
A seller submits $500,000 in invoices over 90 days. After credits, short pays, and disputed amounts, $455,000 is collected. Dilution rate: ($500,000 - $455,000) / $500,000 = 9%.
Advance rate and dilution
Factors use historical dilution to set advance rates. A seller with 8% historical dilution may find the advance rate capped below 85% to maintain a buffer. Rising dilution can trigger a reserve hold or reduce available funding mid-program.
Common causes of dilution
- Customer short pays for disputed amounts or self-assessed deductions.
- Credit notes issued for returns, quality issues, or pricing corrections.
- Offsets by customers claiming the seller owes them money from another transaction.
- Invoice errors causing partial payment or the need to rebill.
- Volume rebates or trade discounts applied by the customer at payment time.
Related reading
Sources
- International Factoring Association - International Factoring Association. Accessed 2026-05-19.
- Secured Finance Network - Secured Finance Network. Accessed 2026-05-19.