Portfolio Financing for Installment Lenders: How Receivables-Backed Lines Work
By MercFinancial · Published 2026-10-21
Portfolio financing for an installment lender is a revolving line sized monthly by a borrowing base: eligible receivables times an advance rate, less reserves. Eligibility rules, concentration limits, covenants and reporting.
Portfolio financing for an installment lender is a revolving line secured by the consumer loan receivables and sized each month by a borrowing base: eligible receivables multiplied by an advance rate, less reserves, capped by the commitment. Availability rises as the book grows and falls when delinquency, concentration or covenant limits are breached. It is offered by specialty finance companies that lend to lenders, by private credit funds and, for larger seasoned books, by the lender-finance divisions of some banks, and never by the SBA, which excludes businesses primarily engaged in lending.
This guide works through the borrowing base line by line, the eligibility definitions that decide what counts, concentration limits and covenants, the monthly and annual reporting the lender expects, and the data room to assemble before the first term sheet. It closes with how MercFinancial places an installment lender's portfolio request.
- An installment lender's portfolio line is sized by a borrowing base: eligible receivables times an advance rate, less reserves, recalculated monthly from a signed certificate.
- Receivables drop out of an installment lender's borrowing base when they pass a days-past-due cutoff, are extended too often, or exceed state, product or channel concentration limits.
- Installment lender portfolio facilities carry delinquency, charge-off, tangible net worth, debt-to-net-worth and excess availability covenants, with cash sweeps or amortization when breached.
- An installment lender's data room holds the loan tape, static pools by vintage, licenses, policies and a compliance management system before any term sheet is issued.
A borrowing base is not a credit limit. It is a formula that shrinks exactly when a lender needs the money most.
What a receivables-backed line is and who offers it
A portfolio line is a revolver, not a term loan, because the collateral turns over. The lender takes a first lien on all receivables and their collections, files under the Uniform Commercial Code, and usually takes control of the collection account through a lockbox or a deposit account control agreement, so that borrower payments flow where the lender can see them. Larger facilities add a backup servicer who can take over the book if the borrower fails. Draws and repayments move with the borrowing base, and the commitment is the ceiling.
Specialty finance companies whose business is lending to lenders write most first facilities. Private credit funds write larger ones with tighter covenants, and the lender-finance divisions of some banks write the largest, for seasoned books with audited statements. The SBA is closed under 13 CFR 120.110(b), bank small business desks exclude finance companies by policy, and several large online lenders list lenders as restricted, which is why every guide in the series on consumer finance company funding starts from the specialty market rather than the branch.
The borrowing base, line by line
The principal balance of every open loan on the tape as of the certificate date, tied to the general ledger.
Loans past the days-past-due cutoff, commonly thirty or sixty days, loans extended or modified beyond the permitted count, bankrupt or deceased obligors, loans made outside a licensed state, employee and affiliate loans, loans over the maximum term or amount, and loans in litigation.
A fraction of eligible principal, commonly somewhere between roughly 60 and 85 percent depending on seasoning, losses and product, and lower for a new or subprime book. It is negotiated, and it steps down when covenants are breached.
Dilution, a servicing fee reserve, and an interest reserve in some facilities, each deducted before availability is stated.
Anything drawn above availability is an overadvance, due immediately or within a short cure period, which is why a shrinking base is dangerous.
A hypothetical lender reports $5,000,000 of gross receivables, $600,000 of ineligibles and $4,400,000 eligible. At an illustrative 75 percent advance the base is $3,300,000, less $100,000 of reserves, for $3,200,000 of availability under a $4,000,000 commitment. With $3,500,000 drawn, the $300,000 overadvance is due. The figures are invented to show the arithmetic and are not any lender's terms.
Concentration limits and covenants
Concentration limits keep one slice of the book from carrying the facility. Typical caps apply by state, so a rate-cap change in one legislature cannot take down the base, by product, by origination channel such as online, branch or dealer-referred, by employer or affinity group where the lender markets through one, and sometimes by obligor on larger loans. Receivables above a cap are ineligible, not in default. The lender is pricing the facility on a diversified book, and the caps are how it holds the book to that description.
Covenants test the company rather than the collateral. The common set is a delinquency ratio at thirty or sixty days, a net charge-off ratio, a minimum portfolio yield in some facilities, minimum tangible net worth, a maximum ratio of senior debt to tangible net worth, minimum liquidity and minimum excess availability. Subordinated notes count toward net worth only when subordinated on terms the senior lender approved. A breach triggers a step-down in the advance rate, a cash sweep, an amortization event in which the line stops revolving, or a default, in roughly that order. Cure periods, equity cure rights and lookback periods that average three months rather than testing a single month are all negotiable, and they are worth negotiating before the first draw rather than after the first breach.
Reporting the lender expects, monthly and annually
Monthly, sometimes weekly in a facility's early months, signed by an officer, showing gross receivables, ineligibles, eligible receivables, advance rate, reserves and availability.
Delivered with the certificate, with a roll-forward from the prior month that reconciles originations, collections, charge-offs and adjustments to the change in balance.
Each covenant calculated and compared to its threshold, usually monthly or quarterly, signed by an officer who will be asked about it.
Cumulative losses and delinquency by vintage, refreshed at least quarterly, which is how the lender sees whether new originations are drifting from the book it priced.
An examiner samples loan files for licenses, disclosures and signatures, tests the tape against the system, and reviews collections. Audited or reviewed statements follow at year end.
The data room before the first term sheet
- Historical loan tapes, open and closed, in a consistent format with a data dictionary.
- Static pool reports by vintage, often a year or more of history.
- Two years of tax returns, current financial statements and the portfolio roll-forward.
- Licenses by state with examination reports.
- Written policies for underwriting, collections, extensions, charge-offs, complaints and information security, under a compliance management system.
- A description of the servicing platform and how the tape is produced.
- Existing debt, subordinated notes and draft intercreditor terms.
- Organization chart, key staff, insurance and litigation history.
The mistakes that cost term sheets are a tape that does not tie to the ledger, an extension practice that exists but is not written, subordinated notes with no subordination terms, and a covenant proposal the company never ran against its own history. Test your own numbers against the proposed covenants first, because the lender will. The senior facility sits on top of the stack described in financing for consumer finance companies, and a company that is not yet seasoned should read capital for starting a consumer finance company first. The ordinary items are in the business loan documents checklist.
Where MercFinancial fits
MercFinancial is a commercial funding brokerage in Houston, not a lender, and sets no advance rate. It reads the tape, the static pools, the licenses and the existing stack, and runs the eligibility and concentration tests before any lender does. From more than 160 wholesale and institutional funding sources, it identifies the ones whose policy allows an installment lender of your size and seasoning, places one file with them, and compares the term sheets on advance rate, covenants and cost. Availability depends on the funding source, and when a book is too small or too young a specialist says so. Stephanie, the AI lending assistant, pre-qualifies in two to three minutes with a soft credit pull, and a free 30-minute call is the next step. The wider business funding programs cover the pieces a portfolio line does not.
Frequently Asked Questions
What is a borrowing base for an installment lender?
The formula that sets how much the lender will advance at any time: gross receivables, less ineligible loans, times an advance rate, less reserves, capped by the commitment. It is restated monthly on a certificate signed by an officer and verified at the annual field exam. Because it moves with the book's performance, availability can fall even when the balance drawn has not changed.
What makes a loan ineligible in a borrowing base?
Being past the days-past-due cutoff, being extended or modified more times than the facility allows, an obligor in bankruptcy or deceased, origination in a state where the company holds no license, a loan to an employee or affiliate, a term or amount above the facility's maximum, litigation, and any balance above a concentration cap. Ineligible loans still belong to the company, they simply do not support borrowing.
What covenants come with a portfolio line?
Delinquency and net charge-off ratios tested against the book's history, minimum tangible net worth, a maximum ratio of senior debt to tangible net worth, minimum liquidity and minimum excess availability, and in some facilities a minimum portfolio yield. A breach steps down the advance rate, sweeps cash, stops the line revolving or triggers default, with cure periods and lookback averaging negotiable at the term sheet.
How often does an installment lender report to its lender?
Monthly at least, with a borrowing base certificate, a loan tape, an aging and a roll-forward, plus a compliance certificate monthly or quarterly and static pool updates at least quarterly. New facilities often require weekly certificates in the early months. Once a year an examiner visits to sample files and test the tape, and audited or reviewed financial statements follow the year end.
What is an overadvance and what happens when it occurs?
An overadvance is any amount drawn above the current availability, usually because the borrowing base shrank after delinquency rose or a concentration cap was breached. It is due immediately or within a short cure period, and if it is not repaid the facility is in default. Lenders watch for it because a lender whose base is shrinking is often the one least able to repay quickly.
Find out what your receivables would support under a real borrowing base. A funding specialist runs the eligibility and concentration tests on your tape before any lender does and tells you what the line would look like. Stephanie, our AI lending assistant, pre-qualifies in 2-3 minutes with a soft credit pull that won't affect your score, or book a free 30-minute call with a funding specialist at (830) 587-5022.
Get Pre-Qualified with Stephanie Book a Free 30-Minute CallMercFinancial is a commercial funding brokerage in Houston, Texas. MercFinancial is a broker, not a lender: every loan is made by a third-party funding source, every request is subject to that source's underwriting and credit approval, and loan amounts, advance rates, interest rates, terms, fees, collateral and guaranty requirements vary by funding source and borrower and are not guaranteed. Nothing here is a commitment to lend or an offer of credit, and financing is for business purposes only. Any example in this guide is hypothetical and illustrative; actual terms and outcomes vary. Businesses primarily engaged in lending are ineligible for SBA financing under 13 CFR 120.110(b); consumer lenders are licensed and regulated by each state and subject to federal consumer-financial law; financing availability depends on the funding source's policies. This guide is educational only and is not legal, tax, accounting or investment advice.