How to Manage Evergreen Retainers at Your Law Firm: A 2026 Guide to Replenishment, Trust Compliance, and Cash Flow

💰 What an Evergreen Retainer Actually Is

A standard retainer is a lump sum a client pays into trust that the firm draws down as it earns fees. When the money runs out, the client is asked to pay again, often mid-matter, and often reluctantly. An evergreen (or replenishing) retainer flips the model: the engagement letter requires the client to maintain a minimum balance in the trust account at all times. Whenever the balance falls below that floor, the client tops it back up.

The benefit is rhythm. Your firm always has earned-but-unpaid work covered by funds already in trust, which smooths cash flow and protects you from collection risk. The catch is that the money in trust is still the client's money until you earn it, so the accounting must be flawless.

📋 Step 1: Put the Terms in the Engagement Letter

Evergreen terms only work if they are written and signed. Specify the initial deposit, the minimum balance the client must maintain, the trigger for replenishment, and the deadline to replenish after a request. Ambiguity here is where fee disputes and bar complaints begin.

🔢 Step 2: Set a Threshold That Matches the Matter's Burn Rate

The replenishment floor should reflect how fast the matter consumes fees. A litigation matter billing 40 hours a month needs a higher floor than a quiet corporate advisory engagement. A useful starting point is one to two months of expected fees. Set it too low and you are back to chasing payments; set it too high and clients balk at parking excess cash.

🔄 Step 3: Draw Down Correctly Against Each Invoice

The monthly cycle should be predictable and auditable: generate the invoice, apply earned fees against the trust balance, transfer only the earned amount from trust to operating, and record every movement in the matter's trust ledger. The client should receive a statement showing beginning balance, fees applied, and remaining trust balance.

🔁 Step 4: Automate the Replenishment Request

The whole point of evergreen retainers is that they run themselves. When a matter drops below its floor, the client should get an automatic, branded request to top up, with a link to pay by card or ACH into trust. LawAccounting's client payment portal keeps trust deposits separated from operating payments, so replenishments land in the right account without manual re-keying.

🧾 Step 5: Reconcile Every Month, No Exceptions

Evergreen retainers mean frequent small transfers, which means more chances for a single mistake to compound. A monthly three-way reconciliation catches errors while they are small. With AI-assisted matching against 15,000+ bank connections, LawAccounting clears the routine items automatically and surfaces only the exceptions that need a human, turning a dreaded chore into a quick review.