How a Line of Credit Can Help Your Law Firm Grow Sustainably

A law firm can look profitable on a year-end statement and still scramble to cover payroll in March. The work is done, the invoices are sent, and the money simply has not arrived.

That gap between effort and cash can limit growth for many small and midsize firms. Hiring an associate, testing a marketing channel, or replacing a case management system requires money before the return appears.

A revolving line of credit (LOC) is one tool for closing that gap. Used well, it serves as a short-term cash-flow bridge rather than a rescue plan. Used carelessly, it can turn a billing problem into a debt problem. The difference comes down to how the line is sized, managed, and paired with better collection habits.

Key Takeaways

• Timing, not profitability, is often the constraint. Sound law firm cash-flow management starts with measuring how long revenue remains in unbilled work and unpaid invoices.
• A revolving line is not a term loan. You draw what you need, pay interest on the drawn balance, and restore available credit through repayment.
• Structures differ widely. Bank lines, specialty legal lenders, revenue-based lenders, and the SBA 7(a) Working Capital Pilot have different collateral, reporting, and pricing requirements.
• Client funds are off limits. Money in a trust account belongs to clients, must remain separate from firm funds, and cannot be used to secure firm debt.
• Reducing lockup lowers the need to borrow. Faster billing and cleaner receivables can reduce the size of the credit line a firm needs.

The Cash-Flow Reality Inside Law Firms

Two ratios help explain the distance between hours worked and money collected. The realization rate measures how much completed work reaches an invoice. The collection rate measures how much invoiced work is eventually paid. In 2025, U.S. law firms averaged an 88% realization rate and a 93% collection rate, according to Clio’s KPI benchmarks.

Lockup is the value tied up in work that has been performed but not yet collected. The same research estimates median collection lockup at about 32 days and suggests that roughly 7% of invoices are never paid. A month of delay may sound minor until it is measured against payroll, rent, and vendor bills that arrive on a fixed schedule.

That is why a firm can report strong annual results and still delay hiring. Growth expenses happen now, while collections may arrive weeks or months later.

Where a Revolving Line of Credit Fits

A line of credit gives a firm access to a set limit that can be drawn, repaid, and used again. Interest generally accrues only on the amount drawn, although fees may apply. This differs from a lump-sum loan that begins accruing interest on the full amount at the start.

Sustainable uses tend to share one trait: they bridge a known timing gap rather than fund an uncertain plan. Examples include covering payroll during a slow settlement quarter, advancing expert witness or filing costs on active matters, maintaining an approved marketing budget while receivables catch up, and completing a receivables cleanup without freezing operations.

If you are comparing conventional bank underwriting with revenue-based alternatives, a line of credit to grow your law firm may be available based on recent revenue and bank statements rather than hard collateral. Redline Capital is one commercial provider that some firms review alongside bank and SBA facilities. This is one option among several, and terms can vary significantly by provider.

Comparing the Main LOC Structures

The right structure depends on the firm’s financial history, revenue model, available collateral, and preferred repayment schedule.

Bank lines of credit

Conventional underwriting, personal guarantees, and collateral requirements are common. Pricing is often quoted against Prime, a benchmark rate used by banks. Wells Fargo, for example, publishes BusinessLine pricing from Prime + 1.75% to Prime + 9.75%, subject to change. Banks often publish lower spreads than alternative lenders but may require more documentation.

Specialty legal lenders

Some lenders design products around how law firms generate revenue. Esquire Bank treats case inventory as potential collateral and offers working-capital and case-cost lines for legal practices. Advocate Capital describes working-capital lines secured by accounts receivable, with available limits of up to $8 million. These structures may suit contingency-fee practices whose value is concentrated in pending matters.

SBA 7(a) Working Capital Pilot

The SBA’s 7(a) Working Capital Pilot offers monitored lines of credit up to $5 million, with a maximum maturity of 60 months and tiered interest caps over base rates. Firms should expect asset-based features and ongoing reporting in exchange for higher potential limits and capped spreads.

Sizing the Line and Setting Guardrails

Size the limit according to your cash cycle rather than your ambitions. A firm might target enough capacity to cover two or three payroll cycles or a defined share of average monthly operating expenses. Revenue-based programs often size lines in relation to recent monthly revenue, which can produce a different limit than conventional bank underwriting.

Guardrails matter more than the limit itself. Before the first draw, document:

• Approved uses, such as payroll, case costs, and budgeted growth expenses.
• Who may authorize a draw and when a second approval is required.
• Repayment triggers, such as paying down the balance when settlement funds clear or receivables fall below a set threshold.
• A monthly review of the outstanding balance against the original plan.

Ethics and Accounting Guardrails

Client money is not firm money. Funds held in a trust or interest on lawyers’ trust accounts (IOLTA) account belong to clients, must remain separate from operating funds, and cannot be pledged to secure a firm’s borrowing. As the D.C. Bar explained in Opinion 389, client money in a trust account is not available to the lawyer’s creditors, and commingling can lead to discipline.

Passing interest costs to clients is also more limited than many firms assume. D.C. Bar Opinion 345 permits lawyers to pass interest from a firm line of credit to a client only when the borrowing funded that client’s case costs and the client agreed in advance. Interest on borrowing used for general overhead cannot be charged to an individual client.

Rules vary by jurisdiction. Confirm local requirements with bar ethics counsel, and establish matter-level cost tracking with your CPA before advancing case expenses on credit.

Reduce the Need to Borrow

The least expensive capital is often the money the firm is already owed. Invoice on a fixed schedule, review overdue accounts weekly, maintain evergreen retainers where permitted, and build a rolling 13-week cash forecast. These practices make shortfalls visible before they become urgent.

Understanding the Full Cost

Rates are variable and lender-specific, so compare written terms rather than relying on a general market estimate. Bank pricing is often stated as a spread over Prime, while the SBA’s Working Capital Pilot caps spreads according to line size. Specialty and revenue-based programs may use different pricing models, and short terms with weekly repayment can increase pressure on cash flow.

Ask for the complete cost before signing, including annual fees, line fees, draw fees, prepayment terms, reporting requirements, and personal guarantees. Have your CPA model the repayment schedule against a realistic collections forecast rather than a best-case scenario.

When a Line of Credit Is the Wrong Tool

Borrowing is a poor substitute for financial discipline. A line of credit rarely makes sense for owner distributions, speculative expansion without a visible pipeline, or chronic receivables problems that better billing habits could address. If lockup is falling and cash reserves are stable, reducing the limit can be a responsible decision.

The Sustainable Version of Growth

A line of credit does not create revenue. It changes when a firm can act on revenue it has earned or reasonably expects to collect. Sustainable use requires steady billing practices, strict separation of client funds, and a written plan for every draw. Before committing, review the numbers with a CPA, confirm ethics questions with bar counsel, and compare written terms from multiple lenders.