Invoice Factoring Cost Breakdown: What You Really Pay

Component 1: The Discount Rate

The discount rate (or factoring fee) is the primary cost—the percentage of an invoice's face value you pay for the advance. It's typically quoted per 30-day period.

Example: 2.5% per 30 days on a $50,000 invoice = $1,250 in discount fees.

Some factors use tiered or pro-rated pricing:

- 2% for the first 30 days

- 0.5% for each additional 10-day period

On a $50,000 invoice paid in 45 days: 2% + 0.5% = 2.5% = $1,250.

Component 2: Transaction Fees

On top of the discount rate, most factors charge transaction fees:

Wire transfer fees: $15–$35 per wire. If you fund 4 times per month, that's $60–$140 in wire fees alone.

ACH fees: $0–$10 per ACH. Much lower than wire; ask if ACH is available for your advance.

Invoice processing fees: $1–$10 per invoice submitted. If you submit 50 small invoices/month, this adds up.

Reserve release fees: Rare, but some factors charge for releasing your reserve after customer payment.

Component 3: Account Maintenance Fees

Monthly charges that exist regardless of factoring volume:

Monthly minimum fee: If you don't hit your contracted minimum volume, you pay a fee equivalent to the discount rate on the minimum volume.

Account maintenance fee: Some factors charge $50–$200/month for account management.

Unused line fee: Rare, but some larger facilities charge a fee on any unused portion of your credit line.

The Reserve: Not a Cost, But a Timing Issue

The reserve (the 10%–20% held back at advance) is NOT a cost—it's your money, held temporarily. It's returned when your customer pays.

However, the reserve affects your effective working capital:

On $100,000/month in factoring with an 85% advance rate, you receive $85,000. The remaining $15,000 is in reserve—minus fees—returned when customers pay.

In a steady state (invoices being submitted and paid regularly), your reserve pool stabilizes at about 15% of your average outstanding balance. This is capital tied up in the factoring relationship.

Calculating Your Real All-In Cost

Here's a monthly cost model example:

- Monthly factoring volume: $100,000

- Discount rate: 2.5%: $2,500

- Wire fees (4 fundings × $25): $100

- Invoice processing fees (20 invoices × $5): $100

- Monthly minimum fee: $0 (you hit the minimum)

Total monthly cost: $2,700

Effective rate: $2,700 / $100,000 = 2.7% (vs. the quoted 2.5%)

That 0.2% difference is 8% more than the quoted rate—and in this example fees were modest. Always model the complete picture.