Asset-Based Lending Borrowing-Base Guide

An asset-based lending (ABL) borrowing base is the maximum collateral-supported amount a borrower may draw, subject to the facility commitment and loan terms. A receivables-based calculation typically applies the contractual advance rate to eligible accounts receivable after ineligibles and concentration limits, then applies reserves or blocks as the agreement requires. Excess availability compares the permitted borrowing base or commitment with outstanding loans.

The objective is not to maximize eligible collateral. It is to measure collateral that is identifiable, collectible, legally available, and monitored at a frequency consistent with the facility's risk.

1. Establish the collateral population

Reconcile the A/R aging to the general ledger and remove records that do not represent enforceable third-party receivables. Normalize customer identities before measuring concentration.

Match aliases and related obligors

Separate credits and unapplied cash

Identify contra and intercompany balances

Confirm invoice and shipment evidence

2. Apply eligibility rules record by record

Eligibility should be reproducible from documented rules. Common tests cover delinquency, disputes, cross-aging, foreign receivables, government claims, retention, contra accounts, and concentration caps.

3. Measure dilution and collection behavior

Credit notes, returns, rebates, disputes, and short payments reduce the amount ultimately collected. Compare trailing dilution with the assumptions embedded in the advance rate and reserves.

Gross and net dilution

Days sales outstanding trend

Roll rates between aging buckets

Top-obligor payment performance

4. Calculate availability transparently

Show gross collateral, each exclusion, concentration cap, reserves, eligible collateral, advance rate, gross availability, outstanding loans, and resulting excess availability. Retain a line-level audit trail.

5. Connect controls to funding

Define reporting frequency, lockbox or dominion arrangements, verification, audit rights, exception authority, and triggers for reserves or ineligibility. Controls should tighten as collateral volatility increases.

Borrowing-base control checklist

A/R reconciled to the ledger

Customer identities normalized

Eligibility rules documented

Concentration caps applied

Dilution and roll rates reviewed

Reserves individually explained

Availability bridge retained

Exceptions approved and time-bound

How is an ABL borrowing base calculated?

Start with each collateral class, remove amounts that are ineligible under the loan agreement, apply concentration caps and the contractual advance rate, and then apply reserves or blocks in the required sequence. Compare the resulting borrowing base with the facility commitment and outstanding loans to determine remaining availability. The agreement controls the exact formula.

What are ineligible receivables in a borrowing base?

Ineligible receivables are accounts excluded by the facility's eligibility rules. Common tests address aging, disputes, foreign or government accounts, contra balances, intercompany balances, retainage, missing evidence, concentration, and other conditions defined in the loan agreement.

What is cross-aging in asset-based lending?

Cross-aging is a contractual rule that can make all or part of an obligor's receivables ineligible when a stated share of that obligor's accounts becomes past due or otherwise ineligible. The threshold and treatment depend on the facility agreement.

What is excess availability in an ABL facility?

Excess availability is generally the lower of the borrowing base or facility commitment, less outstanding borrowings, subject to any reserves, blocks, and other agreement terms. It shows remaining borrowing capacity at the measurement date.