Operators usually treat a credit limit as a negotiation: ask for a number, get talked down, settle somewhere in the middle. That is not how the number is produced. A limit is an output. A credit desk runs two or three independent sizing tests, each of which returns a dollar figure, and the facility gets approved at the smallest of them. Negotiation moves the edges. It does not move the binding test.
Knowing which test is binding on your file is the whole game, because each one is fixed by different work. If collateral is your constraint, cleaning the receivables aging can raise the limit within a month. If cash-flow capacity is the constraint, no amount of receivable cleanup changes anything and you need to move coverage instead. Most operators spend their effort on the test that was not binding, then conclude the lender was arbitrary.
The three tests, and why the smallest wins
| Test | What it measures | Primary driver |
|---|---|---|
| Borrowing base | How much collateral value supports the exposure | Eligible receivables and inventory, times advance rates |
| Cash-flow capacity | Whether the business can service the facility | Adjusted EBITDA against total annual debt service |
| Deposit and behavior | What the operating account can actually carry | Average daily balance, deposit volume and consistency |
A lender applies the tests it can. An asset-based line runs all three. A smaller unsecured or lightly secured line may run only the last two. A term facility is sized almost entirely on the second, with collateral setting a floor on recovery rather than a ceiling on size.
Test one: the borrowing base
A borrowing base converts collateral into an availability number. It is arithmetic, not judgment, once the definitions are set, which is precisely why the definitions get negotiated so carefully. Two facilities with identical stated limits can produce wildly different availability depending on what counts as eligible.
Eligible receivables
You start with gross accounts receivable and subtract the ineligibles. The standard exclusions across most asset-based facilities are invoices aged past a stated threshold, commonly ninety days from invoice date; the portion of any single customer's balance above a concentration cap, often in the range of fifteen to twenty-five percent of the total; related-party and intercompany invoices; contra accounts where the customer is also a vendor; foreign receivables without credit insurance; progress or pre-billings not yet earned; and credit balances. Thresholds vary by lender and industry.
Advance rates
What survives the ineligibles gets multiplied by an advance rate, the share of eligible collateral the lender will lend against. The rate reflects how confident the lender is that the asset converts to cash at close to book value in a stress scenario. Receivables from creditworthy commercial customers advance highest. Inventory advances lower and is usually capped by a sublimit, because liquidating inventory is slow and rarely recovers cost.
| Collateral | Illustrative advance rate | Why it sits there |
|---|---|---|
| Eligible commercial receivables | 70% – 85% | Converts to cash on a known schedule |
| Government or insured receivables | Varies widely | Assignment mechanics and payment lag drive the rate |
| Finished goods inventory | 25% – 50% | Sellable, but liquidation recovery is uncertain |
| Raw materials | Lower than finished goods | Requires conversion before it has resale value |
| Work in process | Often ineligible | Rarely realizable outside the business |
Test two: cash-flow capacity
Collateral answers whether the lender gets repaid in a bad outcome. Cash flow answers whether it gets repaid in the normal one, and it sets a ceiling that collateral cannot lift. A business with beautiful receivables and coverage below its lender's threshold does not get a large line; it gets a small one, or a decline, or a structure with tighter controls.
The mechanic to understand is imputed interest. Many desks size a revolver by asking what interest expense the business could absorb if the line were fully drawn, then confirming coverage still clears with that expense included. On a $700,000 line at an illustrative 10.5 percent, that is roughly $73,500 of annual interest added to the coverage test. If existing debt service already consumes most of your adjusted EBITDA, the limit gets cut to whatever fully-drawn interest the file can carry: regardless of how much collateral is sitting there.
Test three: deposits and account behavior
For smaller lines and for facilities without a formal borrowing base, sizing often anchors to the operating account. The logic is straightforward: the account shows what the business actually moves, and it is much harder to dress up than a financial statement. Deposit volume establishes scale, deposit consistency establishes reliability, and average daily balance establishes whether the business can absorb a payment cycle without going to the edge.
As a rough shape rather than a rule, deposit-anchored lines frequently land somewhere in the range of eight to fifteen percent of trailing twelve-month revenue, or something near a single month of average deposits. Where a specific file lands inside or outside that range depends entirely on the lender, the industry and the rest of the credit profile. Overdrafts and non-sufficient-funds items pull the number down fast, because they answer the liquidity question in the negative before anyone reads the statements closely.
Reserves, sublimits and the quiet reductions
Even after the tests, availability gets trimmed by items that never appear on the term sheet headline. Dilution reserves account for credit memos, returns and short payments: if historical dilution runs at six percent, the lender may hold back a comparable amount because those invoices will never collect in full. Rent reserves cover landlord claims on inventory at leased locations in states without a waiver. Tax reserves cover unpaid payroll taxes, which prime most liens. Sublimits cap categories independently of the total.
None of this is punitive. Every reserve is the lender pricing a specific way the collateral fails to be worth what the report says. The useful response is to reduce the underlying behavior (fewer credit memos, cleaner returns handling, current payroll taxes) rather than to argue the reserve.
Why the number moves after closing
On a borrowing-base facility, the limit you closed at is a ceiling, not a balance. Availability is recalculated each time you submit a borrowing base certificate, usually monthly and sometimes weekly on larger facilities. A slow collection month pushes invoices past the aging threshold and availability drops. A single customer growing to thirty percent of the book creates concentration excess and availability drops. Growth itself can raise it (more eligible receivables, more availability) which is the point of the structure.
Facilities are also redetermined at annual review against updated financials. That review can raise a limit, hold it, reduce it, or reprice it. Treat the renewal as a small underwriting event rather than a formality, and go into it with clean interim statements and a current aging.
What to produce if you want a real limit rather than a placeholder
- A detailed receivables aging as of month end, by customer, with invoice dates rather than statement dates.
- A customer concentration schedule showing each customer as a percentage of total receivables and of revenue.
- Twelve months of dilution history: credit memos, returns and short pays as a percentage of gross billings.
- An inventory report split by finished goods, work in process and raw materials, valued at cost.
- Six months of statements for every operating account, so average daily balance can be computed accurately.
- A full debt schedule with monthly payments, so coverage can be tested including the new facility.
- Interim financial statements that reconcile to the aging and to the deposits.
- Payroll tax status and any lease locations where inventory sits, for the reserve analysis.
How to make the number bigger
Work the binding test, not the comfortable one. If the borrowing base is binding, the fastest levers are collections on invoices approaching the aging threshold, resolving disputed invoices that are quietly sitting past ninety days, and reducing dilution by fixing whatever generates credit memos. Concentration is slower (you diversify by winning customers, not by asking) but even documenting a large customer's credit strength can sometimes support a higher cap.
If cash-flow capacity is binding, the collateral work is wasted. Retire or refinance the highest-cost short-term debt, because annualized debt service on daily-remittance obligations is enormous relative to the balance, and removing it moves coverage faster than anything on the revenue side. If deposits and behavior are binding, the work is treasury discipline over a statement cycle or two: collect faster, stop paying vendors weeks early, and hold a real operating reserve instead of sweeping the account to the floor.
Why is my limit lower than my monthly revenue?
Because limits are sized on collateral and capacity, not on volume. A business doing $800,000 a month with fast-collecting receivables and modest inventory may show far less eligible collateral than the revenue suggests, and the coverage test caps exposure independently. High revenue with thin margins frequently produces a small limit, which surprises operators every time.
Does asking for a bigger limit hurt my chances?
Asking for a figure wildly out of proportion to the file mostly signals that you have not done the arithmetic, which slows the review. A better approach is to request a limit you can support with a borrowing base and a coverage calculation you have already run, and to say explicitly what the money funds. Desks respond well to a request that arrives already sized.
What is dilution and why does it reduce my availability?
Dilution is the share of gross billings that never collects in cash: credit memos, returns, short payments, discounts and write-offs. If historical dilution runs at six percent, roughly six cents of every billed dollar was never really collateral. Lenders hold a reserve for it because advancing against invoices that will be reduced later creates an over-advance. Reducing dilution raises availability directly.
Can a personal guarantee increase my limit?
It can support a file, but it rarely lifts a borrowing base, because the base is a collateral formula. Guarantees are more likely to affect whether a facility is approved at all, and sometimes its pricing, than to change the sizing arithmetic. Below a certain facility size, a guarantee is generally expected regardless.
How often is a borrowing base recalculated?
Monthly is the common cadence, with weekly or even daily reporting on larger or more actively monitored facilities. The frequency is stated in the credit agreement, and it comes with a reporting obligation: a borrowing base certificate, an aging and often an inventory report. Missing that reporting is a covenant issue in its own right, separate from the collateral it reports on.
Do government or large-institution customers help or hurt?
Both, depending on the facility. Their credit quality is strong, which is helpful, but assignment restrictions, longer payment cycles and specific statutory requirements can make those receivables harder to advance against, and some lenders make them ineligible or apply a lower rate. If a large share of your book is public-sector, raise it early, because it materially changes how the base is built.
Will a field exam happen, and what does it look at?
On asset-based facilities, usually yes, either before closing or shortly after, and then periodically. An examiner tests the aging against invoices and proof of delivery, verifies a sample of customer balances, reviews dilution history and confirms inventory counts and valuation. The output can adjust advance rates and reserves, so the exam is effectively a resizing event. Frequency and scope vary by lender and facility size.
Where to start
Build your own borrowing base before anyone builds one for you. Pull the aging, strike everything past ninety days, strike the concentration excess above twenty percent for your largest customer, strike intercompany and credit balances, and multiply what is left by eighty percent. Then compute coverage with fully-drawn interest on the limit you want. Whichever number is smaller is your real limit, and whichever test produced it is the only work worth doing this quarter.
Qualified Commercial Underwriting Desk
Credit and capital markets
The Qualified Commercial underwriting desk reviews commercial real estate, dealer and Main Street files daily. The Academy is written from that work (how files are actually read, priced and declined) rather than from a rate sheet.
Educational content only. Nothing here is a commitment to lend, an offer of credit, or tax, legal or accounting advice. Program terms, timelines and thresholds vary by lender, file and market conditions, and any figures shown are illustrative.