Dilution reserve

Dilution is the part of your receivables that disappears without cash arriving: credit memos, volume rebates, returns, promotional allowances, and billing corrections. From the lender's seat it behaves like a loss, because an invoice they advanced against gets settled for less than face value. The dilution reserve sizes that risk and holds it back from availability.

For businesses with heavy rebate or returns activity, the dilution reserve is often the single largest reserve in the facility, bigger than the loss reserve. A consumer products company running 5 to 8 percent dilution can easily see a reserve in the low teens as a percentage of the pool.

Most trade receivables securitizations calculate a dynamic dilution reserve as: (stress factor x expected dilution + volatility component) x dilution horizon ratio. Expected dilution is usually the 12 month average dilution ratio. The volatility component captures how far the worst month deviated from average, commonly (dilution spike less expected dilution) x (dilution spike / expected dilution). The dilution horizon ratio scales the result to the sales still exposed to future dilution.

On a $40,000,000 net receivables balance, a 13.2 percent dilution reserve holds back $5,280,000. Exact stress factors and horizon definitions vary by agreement and by the rating agency criteria behind it, so confirm your facility's specifics before modeling.

• Credit memos by issue month, tied back to the original invoice month so the dilution horizon is measured correctly.
• Rebate and allowance accruals versus actual credits issued, because timing gaps distort monthly ratios.
• Returns and pricing adjustments coded separately from bad debt write-offs, which belong in the loss reserve, not here.
• Sales by month, since the dilution ratio is commonly dilution in the month divided by sales in the month the diluted receivables were originated.

The most common error is measuring dilution against the wrong denominator. Crediting January invoices in March and dividing by March sales understates a shrinking business and overstates a growing one. Olycor computes the dilution ratio from credit memo lineage, matching each credit to the sales month it dilutes, and recalculates the full reserve deterministically each period with every input traceable to source records.