Cash Flow Buffer for a Therapy Practice: 5 Easy Steps

A cash flow buffer for therapy practice owners is money you set aside so rent, software and payroll get paid while you wait on insurance. Payers take time to process claims, and a buffer keeps that wait from becoming a crisis. This guide shows how to size one, how to build it, and where to hand off to your CPA. It sits alongside our private practice management hub.

Why does slow insurance payment create a cash flow gap?

You pay your costs when they come due, but insurance pays after the visit, after the claim, and after the payer processes it. That gap is the cash flow problem a buffer solves. How long it lasts depends on the payer. Keep the three payer types apart.

Medicare

Federal law builds in a waiting period. Section 1842(c)(3) of the Social Security Act bars payment of an electronic claim within 13 days of receipt, and of other claims within 28 days (Social Security Act, section 1842, checked 10/23/26).

Medicaid

For fee-for-service claims, 42 CFR 447.45 (checked 10/23/26) tells the state agency to pay 90 percent of clean claims from individual and group practitioners within 30 days and 99 percent within 90 days. Managed care plans follow their state contracts, so check yours.

Private payers

Timing comes from your contract and from state prompt-pay law, and states differ. See our guides to the Massachusetts and Texas prompt-pay rules as examples of how much they vary. A claim that needs rework waits even longer, so a strong clean claim process shortens the gap.

How big should a cash flow buffer for therapy practice owners be?

Size it from your fixed monthly costs and your real payment lag, then pick the number of months of cushion with your CPA. There is no universal number in the sources we reviewed. The math looks like this:

Buffer target = monthly fixed costs x months of cushion you choose.

Input	Where to find it
Monthly fixed costs	Bank and card statements: rent, software, malpractice coverage, loan payments, payroll, billing fees
Payment lag	Your Days in A/R figure and your remittances
Expected pay per visit	The Allowed Amount on each payer’s fee schedule, not your full fee
Months of cushion	A decision to make with your CPA

Track out-of-network payments on their own line. If you bill Out-of-Network (OON), timing and who receives the payment depend on the plan, so do not average those claims with in-network claims. Whether you bill timed psychotherapy codes or E/M visits with add-ons, the lag math is the same. Track the two services separately if your mix is large.

How do you build a cash flow buffer in 5 steps?

You build it the way you pay yourself: on a schedule, in small amounts, from money that has actually arrived. Work through these five steps:

1. Use a business account. The Small Business Administration (SBA) notes that you need a business bank account however you accept payments (SBA, Manage your finances, checked 10/23/26). Ask your bank about a separate savings account for the buffer.
2. Move money after each payment batch. Transfer a set amount whenever remittances post. Small, regular transfers add up.
3. Shorten the lag. Check claim status early with our claim status inquiry guide, and keep Denial Management on a weekly schedule so denied claims do not sit.
4. Keep tax money out of the buffer. The IRS says self-employed people generally pay estimated taxes during the year (IRS, Estimated taxes, checked 10/23/26). Ask your CPA how much to set aside.
5. Plan a backup. The SBA page says you may be able to use a line of credit with your bank. Ask about it before you need it.

Review your cash flow buffer for therapy practice costs monthly. Our monthly billing checklist and the revenue cycle overview show what to look at.

When should you talk to a CPA?

Talk to a CPA before you set the target, before you decide how much to set aside for taxes, and before you borrow. This post is general education, not financial, tax or legal advice. Your CPA knows your entity type, your state and your numbers.

The SBA page also suggests considering a CPA or a bookkeeper to manage accounts receivable, accounts payable and cash. A CPA usually costs more than a bookkeeper but can tailor the advice to you.

How MCM South helps

MCM South is a medical billing service for psychotherapists and psychiatrists in solo and medium-size mental health practices. We submit claims, work denials and bill out-of-network claims for clients, so payments move through your accounts receivable on a steady schedule and your cash flow buffer for therapy practice costs does not drain. Learn what therapist billing services handle.

Cash flow buffer for therapy practice: the short version

A cash flow buffer for therapy practice owners does not need to be fancy. It is a separate account, a target set with your CPA, and a monthly habit of topping it up. Review your cash flow buffer for therapy practice costs each quarter, and adjust the target when your rent, software or payroll changes.

Frequently asked questions

Where MCM South works

MCM South works only in mental and behavioral health. We serve psychotherapists and psychiatrists in solo and medium-size practices across ten currently served states: Georgia, Massachusetts, Connecticut, Texas, Florida, New York, Colorado, Tennessee, North Carolina and Illinois. Need a payer contact? Use our insurance companies contact directory.