AR Aging & Eligible Receivables: What Actually Counts Toward Your Credit Line

The Basics

What an AR Aging Report Is and Why Lenders Care

An AR aging report is a snapshot of every open receivable sorted by how many days have passed since the invoice date. The standard buckets are current (not yet due), 1-30 days past due, 31-60 days past due, 61-90 days past due and 91+ days past due. Every asset-based lender asks for this report as part of underwriting and requires it monthly with your borrowing base certificate.

The aging report is the raw input to your borrowing base calculation. But the lender does not simply take 85% of whatever number sits at the top. They run the aging through a series of eligibility filters, and the result — eligible receivables — is almost always smaller than gross AR. How much smaller depends on your customer mix, payment behavior and collection practices.

A manufacturer with $4 million in gross AR might find that only $2.6 million is eligible once ineligibility rules are applied. At an 85% advance rate, that is $2.21 million of availability instead of the $3.4 million the gross number might suggest. The delta matters enormously for day-to-day liquidity.

Who Gets Cut

The Core Eligibility Rules Every Lender Applies

Eligibility rules vary by lender and are negotiated at close, but most ABL facilities exclude the following categories by default.

90-Day Past-Due Cutoff

Receivables that are 90 or more days past the invoice date are automatically ineligible in most facilities. Some credit agreements use 90 days past due date (the end of the payment term) rather than invoice date — a meaningful difference if your standard terms are net-60. Read the definition carefully. An invoice billed on net-60 terms that has not been paid after 150 days from invoice date may still be within the 90-day-past-due window. Or it may already be out. The exact language determines availability.

The Cross-Aging Rule

This is the rule that surprises operators most. If 25% or more of a single debtor's total outstanding balance is 90 or more days past due, the entire balance from that debtor becomes ineligible — including invoices that are current and on time. A customer with $500,000 outstanding who is slow-paying just $130,000 of older invoices can wipe out the full $500,000 from your eligible base. That is not a hypothetical. It happens in seasonal manufacturing businesses regularly when a large customer stretches payment on one quarter's invoices while still receiving goods.

Concentration Limits

Most ABL deals cap any single debtor at 20% to 25% of total eligible receivables. If one customer makes up 40% of your AR, the portion above the cap is ineligible. This does not mean 40% of that customer's balance is excluded — it means whatever excess pushes total exposure past the concentration threshold gets cut.

For manufacturers selling primarily to one or two major customers, concentration limits can be the single biggest constraint on borrowing base availability. Lenders will sometimes grant exceptions for investment-grade account debtors, but it requires specific negotiation at underwriting. For an overview of how this fits the broader collateral picture, see ABL Borrowing Base Mechanics — Hardin County.

Government and Foreign Receivables

Government receivables from federal, state or municipal agencies are often excluded or advanced at reduced rates. Two reasons: the Assignment of Claims Act creates restrictions on assigning federal government receivables to lenders without specific contractual procedures, and government agencies are notoriously slow payers. Some lenders will include government AR at a 50% to 70% advance rate rather than the standard 80% to 85%, provided proper assignment notices are in place.

Foreign receivables are ineligible by default in most domestic ABL facilities unless backed by letters of credit or credit insurance from an approved carrier. A manufacturer exporting to Canadian or Mexican customers can sometimes negotiate inclusion at a haircut, but it requires additional documentation and lender approval.

Other Standard Exclusions

• Receivables subject to offset, counterclaim or dispute
• Contra-balance accounts where you also owe money to the debtor
• Intercompany receivables
• Progress billings not yet earned under the contract
• Receivables from affiliates or related parties
• Receivables where goods have not yet been shipped or services not yet performed

The Hidden Haircut

Dilution: Why Billed AR Is Not the Same as Collected AR

Dilution measures the gap between what you invoice and what you actually collect. Credits, returns, allowances, chargebacks, warranty adjustments and early-payment discounts all reduce the realized collection versus the billed amount. Lenders calculate trailing dilution — typically a six-month or twelve-month average — and use it to reduce the advance rate on eligible AR.

The formula is straightforward: dilution rate equals (total credits and adjustments) divided by (total gross sales) for the measurement period. A company billing $10 million annually with $800,000 in credits and returns has an 8% dilution rate.

How Dilution Affects Your Advance Rate

Lenders typically start with an 85% advance rate on eligible AR and then subtract dilution. If your dilution rate is 8%, the lender may reduce the advance rate to 80% or even apply a formulaic adjustment that mechanically lowers the rate as dilution rises. A deal with a dilution reserve means every dollar of higher-than-expected returns directly reduces your borrowing base, without any change to gross AR at all.

Manufacturers with seasonal return cycles — like those selling to retailers who conduct post-holiday chargebacks — can see dilution spike in Q1. If your measurement period captures that spike, the advance rate haircut persists for months even after return activity normalizes. Build a dilution calendar so you know when spikes will hit your borrowing base.

Special Cases

Government AR: Slow-Pay Risk and Assignment Rules

Federal government receivables are governed by the Assignment of Claims Act, which restricts the voluntary assignment of government contract payments to a lender. Proper assignment requires filing a specific notice with the contracting agency, the surety and the disbursing officer. Skip this step and the lender's security interest in those receivables may be unenforceable.

State and local government receivables carry different rules by jurisdiction. Some states permit assignment freely; others impose restrictions similar to the federal framework. If government AR is a meaningful part of your collateral, have your attorney and the lender's counsel review the assignment mechanics before closing. Discovering the issue after the deal is funded complicates things considerably.

For reshoring manufacturers doing business with the Department of Defense or other federal agencies, government AR can represent a large share of revenue. Structuring these receivables properly can move them from ineligible to eligible, which has a direct dollar impact on your availability. See Asset-Based Lending for Reshoring for how capital access works at scale for domestic manufacturers.

Practical Steps

How to Clean Up AR and Get More From Your Borrowing Base

The borrowing base certificate date is the snapshot date. Whatever your AR looks like on that date is what the lender counts. That gives you a practical lever: collections effort before the BBC date directly increases available credit.

Accelerate Collections Before Reporting Dates

Call on aging invoices two weeks before your BBC date. Even partial payments on large balances can pull an invoice back inside the 90-day window or reduce a debtor's aging percentage enough to avoid cross-aging. This is not accounting manipulation — it is basic receivables management timed to your reporting cycle.

Resolve Disputes Faster

Disputed invoices age while the dispute sits open. Every day a $50,000 disputed invoice spends in limbo is a day it moves closer to ineligibility. Assign someone to dispute resolution with authority to issue credits quickly when warranted. The credit hits the income statement, but it also resets the aging clock by converting the disputed amount from AR to a resolved item.

Diversify the Customer Base

Concentration limits are a structural problem. If one customer accounts for 35% of your AR and the cap is 25%, you permanently lose borrowing base on the excess. Adding two or three mid-size customers distributes the balance and pushes all debtors below the concentration threshold. This is a longer-term fix but it has compounding benefits for the borrowing base over time.

Invoice Immediately on Shipment

Batching invoices at the end of the week or month quietly ages your AR before payment terms even begin. A shipment on the 3rd invoiced on the 31st has already lost 28 days on its aging clock. Daily invoicing is table stakes for borrowers running an AR-heavy revolver. It also gives the lender higher confidence in the AR accuracy during field exams.

Common Questions

Frequently Asked Questions