Med Spa Accounting and Tax Glossary: 60 Terms Owners Hear from Their CPA

Every med spa owner eventually sits across from an accountant and hears a term that is clearly important and clearly not explained: the package liability is understated, the SSTB question affects your QBI, the 1099-K will not match your revenue. This glossary is the plain-English version of those conversations. Each entry is defined the way it applies to an aesthetics practice, with a med spa example and, where we have written one, a link to the guide that goes deeper.

The sixty terms are grouped the way the books are built: the revenue and liabilities that prepaid treatments create, inventory and product cost, people and pay, entity structure, income tax, sales tax, the reports and KPIs that come out of a close, and the vocabulary of working with an accountant. Dollar figures in examples are illustrative round numbers; thresholds are 2026 figures.

Revenue and liabilities

Deferred revenue

Money a patient has paid for treatments not yet delivered. When a patient buys a six-session laser hair removal package for $1,800, the practice has $1,800 of cash and an $1,800 obligation; revenue is recognized $300 at a time as each session is performed. Until then it sits on the balance sheet as a liability. Our guide to memberships, packages and gift cards explains the monthly rollforward.

Breakage

The portion of prepaid packages, membership credits or gift cards that will never be redeemed. A package that expired with two sessions unused, under a written policy the patient agreed to at purchase, can be recognized as breakage revenue rather than carried as a liability forever. The policy comes from the patient agreement and state law, not from the accountant's convenience, and gift cards follow stricter rules; see gift cards, deposits and no-show fees.

Membership liability

What the practice owes members for benefits already paid for: banked credits, a monthly treatment not yet taken, or a discount already promised. A $199-a-month membership that banks one facial per month creates a liability for every unredeemed facial. The balance is rebuilt each month from the POS open-credit report, and the difference between fees collected and services delivered drives the entry.

Gift card liability

The unredeemed balance of every gift card sold, carried as a liability until the card is used. A $500 card sold in December is not December revenue; it becomes revenue when the recipient books her treatment in March. Florida law prohibits expiration dates and post-sale fees on gift certificates sold in the state, so a Florida practice cannot write the balance off on a timer, and unclaimed-property rules may also apply.

Undeposited funds

A QuickBooks Online holding account for payments recorded before the bank deposit arrives. In a med spa it collects card settlements that reach the bank a day or two after the POS ticket closes, net of processor fees. Left unmanaged it grows into a balance nobody can explain. The fix is a merchant clearing account reconciled to processor statements each month; see QuickBooks Online errors in med spa books.

Merchant fee netting

Posting a card deposit as revenue at the net amount that reached the bank, so processor fees are never recorded and sales are understated. A day of $10,000 in tickets settles at roughly $9,700; booking $9,700 as sales hides $300 of fees and breaks the tie to the POS. Revenue is posted gross from the POS, fees are expensed, and the clearing account bridges the two.

Chargeback reserve

Money a card processor or patient-financing company holds back against disputed charges and refunds, or the amount a practice sets aside for them. A processor that holds a percentage of each settlement for a period is returning the practice's own cash later; the holdback is a receivable, not a loss. A disputed filler treatment that is reversed is contra-revenue in the month it reverses.

Inventory and cost of goods

Cost of goods sold (COGS)

The product cost of the treatments and retail sold in the period: neurotoxin units, filler syringes, biostimulator vials, numbing cream, device tips and the skincare that left the shelf. It is booked from what was used, not what was purchased, so a $12,000 injectables order in March is not a March expense. COGS by service line is what makes treatment-level margins visible.

Injectables inventory

Neurotoxin, dermal filler, biostimulators and similar products on hand, carried as an asset at cost until dispensed. Because a single vial or syringe is expensive, small count errors change gross margin materially, which is why the count happens monthly and is reconciled to the treatment log. Our inventory guide covers count sheets, costing and what to do about expired product.

Unit cost per syringe

The practice's cost for one syringe, vial or unit of product after rebates and shipping, used to price treatments and measure margin per area. If a syringe costs $280 and the treatment sells for $750 with $75 of consumables and a $110 commission, the treatment contributes $285 (illustrative). Tracking unit cost by product and vendor shows whether a promotion is profitable before it runs.

Shrink

Inventory that disappears between counts without a matching treatment or sale: wasted draws, expired vials, staff use, POS entry errors or theft. Shrink is the difference between what the count says should be on hand and what is. A monthly count reconciled to the treatment log turns shrink from an unknown into a number the owner can manage by provider and by product.

People and pay

Provider commission

Variable pay to an injector or aesthetician based on what they produced, usually a percentage of service revenue or a per-treatment amount, sometimes net of product cost. It is accrued in the month the treatments were performed, from the POS production report, and tied to the payroll register when paid. Our guide to injector compensation covers plan design, accruals and the tie-out.

Production report

The POS report of services and products sold by provider for a period, gross of discounts, with redemptions of prepaid packages shown separately. It is the source document for commission calculations, the revenue-per-provider KPI and the deferred revenue rollforward. A commission spreadsheet that does not start from the production report will not tie to payroll or to the books, and usually overpays or underpays someone.

W-2 employee vs. 1099 contractor

The classification that decides whether a provider receives a W-2 with payroll taxes withheld or a 1099-NEC with none. The IRS weighs behavioral control, financial control and the relationship; an injector who works your schedule, uses your product and treats your patients usually looks like an employee. Misclassification creates back payroll taxes and penalties; see employee vs. independent contractor.

Reasonable compensation

The salary an S corporation must pay a shareholder who works in the business before taking distributions, set at what the practice would pay someone else for the same work. An owner who injects four days a week and manages the practice cannot pay herself a token salary and take the rest as distributions. The analysis is in S-corp reasonable salary for an owner-injector.

FUTA and SUTA

Federal and state unemployment taxes, paid by the employer only. FUTA is 6.0% on the first $7,000 of each employee's wages, reduced to a net 0.6% by the credit for state unemployment tax paid on time. SUTA is the state version, at a rate assigned to each employer. Both apply to every W-2 injector, aesthetician and front-desk employee; our payroll taxes guide walks through the full stack.

Reemployment tax

Florida's name for its state unemployment tax. A new Florida employer pays 2.7% on the first $7,000 of each employee's wages, the rate is adjusted each year based on the practice's claims history, and the tax is reported quarterly on Form RT-6. A med spa becomes liable once it has $1,500 of payroll in a quarter or an employee in twenty weeks of a year.

Workers' compensation

Insurance that pays medical costs and lost wages for an employee injured at work, including a needle-stick or a laser burn. Florida requires non-construction employers with four or more employees, full- or part-time, to carry it. Premiums are set by payroll and job class, so the annual audit reconciles to the payroll register; see hiring your first injector.

Entity and structure

Management services organization (MSO)

A non-clinical company that provides space, equipment, staff, marketing, billing and administration to a medical practice under a management services agreement, in exchange for a fee. In states that restrict who may own a medical practice, the MSO is how a non-physician owner participates. The MSO and the professional entity keep separate books, and the intercompany accounting is reconciled monthly.

Management fee

What the professional entity pays the MSO for its services under the management services agreement. It is revenue to the MSO and an expense to the professional entity, documented by invoices and paid between separate bank accounts. The fee structure is set by the agreement and reviewed by health-care counsel; the accountant's job is to book it as written and reconcile the balance between the two entities every month.

Professional entity (PC or PLLC)

A corporation or limited liability company that state law allows only licensed professionals to own, used for the clinical side of a med spa where the state requires it. A physician-owned PLLC may employ the injectors and bill the patients while an MSO runs operations. Formation rules differ by state; forming a med spa entity in Florida covers that state's structure.

Corporate practice of medicine (CPOM)

A state-law doctrine that prohibits corporations or non-physicians from employing physicians or controlling medical decisions. Where it applies, a nurse or entrepreneur cannot simply own a med spa that provides medical treatments; AmSpa describes the professional-entity-plus-MSO model as the common response. Whether and how CPOM applies to your practice is a question for a health-care attorney licensed in your state.

Medical director fee

Compensation paid to the physician who supervises the practice's clinical protocols, often as a monthly contract fee. It is usually paid to the physician or the physician's professional entity under a written agreement; payments of $2,000 or more in 2026 are reported in box 6 of Form 1099-MISC as medical and health care payments, even when the director bills through a professional corporation, and in an MSO structure the fee may be paid by the professional entity. Our guide to medical director agreements covers the accounting and reporting; the agreement itself is a legal document.

S corporation

A tax election, made on Form 2553, that lets an LLC or corporation pass income through to owners while paying the working owner a salary subject to payroll tax and distributing the rest without self-employment tax. The election is due within two months and fifteen days of the start of the tax year it covers. LLC vs. S-corp for a med spa works through when it pays off.

Pass-through entity

A business whose profit is taxed on the owners' personal returns rather than at the entity level: a sole proprietorship, partnership, LLC taxed as either, or S corporation. A single-owner med spa LLC that has made no election reports on Schedule C and pays self-employment tax on the whole profit; see single-member LLC med spa taxes. A C corporation is the exception.

Tax

QBI deduction and SSTB

The Section 199A deduction of up to 20% of qualified business income from a pass-through, made permanent by the 2025 tax law. Health is a specified service trade or business, so above the 2026 thresholds of $201,750 for single filers and $403,500 for joint filers the deduction phases out for a practice whose income is health income. Whether a given med spa or its MSO is a health SSTB depends on facts; see QBI for med spas.

Section 179

An election to deduct the full cost of qualifying equipment, such as a laser or body-contouring platform, in the year it is placed in service instead of depreciating it over years. The 2026 dollar limit is $2,560,000, and the deduction is limited to taxable income from active businesses, with the excess carried forward. Section 179 and bonus depreciation for med spa equipment compares the two.

Bonus depreciation

An additional first-year depreciation deduction, now 100% for qualifying property acquired and placed in service after January 19, 2025 under the 2025 tax law. Unlike Section 179 it can create a loss. A $180,000 device financed in December can be deducted in full that year, which is why the timing of a purchase is a tax planning decision; IRS Publication 946 is the reference.

Estimated taxes

Quarterly payments of income and self-employment tax by owners of pass-through practices, because no employer withholds for them. For 2026 the due dates are April 15, June 15, September 15 and January 15, 2027. The payments should be calculated from closed books each quarter, not from last year's return; see quarterly estimated taxes for med spa owners.

Safe harbor

The payment level that avoids the underpayment penalty even when estimates fall short of the final bill. Per IRS Topic 306 you avoid the penalty by paying at least 90% of the current year's tax or 100% of the prior year's, whichever is smaller; the prior-year figure rises to 110% when prior-year adjusted gross income exceeded $150,000. A growing practice usually chooses the prior-year safe harbor.

Book-to-tax reconciliation

The schedule that explains the difference between profit on the financial statements and taxable income on the return. For a med spa keeping accrual books and filing a cash-method return, it reverses deferred revenue, inventory and accrued commissions; on the return the summary appears as Schedule M-1. Documenting the bridge keeps the books useful and the return right; see cash vs. accrual.

Form 3115

The IRS form used to request a change in an overall method of accounting or in the treatment of a specific item. A med spa that has been reporting package sales when received and wants to defer them under the accrual rules, or that has been expensing inventory and must start capitalizing it, generally files Form 3115 rather than simply changing the numbers.

Form 1099-K

The information return a card processor or payment app files to report the gross card payments it settled to you. A card processor reports regardless of amount; a payment app or marketplace reports once gross payments exceed $20,000 and transactions exceed 200. The amount is gross of fees and refunds and includes sales tax and tips collected, so it will exceed your revenue; the reconciliation to the POS should exist before the IRS asks. The IRS FAQs explain the threshold.

Form 1099-NEC

The form a practice files for payments of $2,000 or more made in 2026 to a non-employee for services: a marketing consultant, a cleaning company, a trainer, an attorney. Medical directors and contract providers paid for clinical services are reported in box 6 of Form 1099-MISC instead. Payments made by card are reported by the processor on Form 1099-K instead. Forms are due at the end of January; our 1099-NEC guide covers medical directors and W-9 collection.

Sales tax

Sales tax nexus

The connection with a state that obligates a practice to register, collect and remit its sales tax. A location, employees or inventory in a state always creates it; selling skincare online into other states can create it too. A second location in a new state means a new registration before the first retail sale; see sales tax nexus for med spas.

Economic nexus

Nexus created by sales volume alone, without a physical presence, permitted since the Supreme Court's 2018 Wayfair decision. Most states use $100,000 of sales into the state; California, Texas and New York use $500,000, and New York also requires 100 transactions. A practice shipping skincare nationwide tracks sales by destination state against these thresholds; see sales tax for multi-location and multi-state med spas.

Marketplace facilitator

A platform, such as an online marketplace, that state law requires to collect and remit sales tax on sales made through it. If your retail skincare sells through a facilitator, the platform collects the tax; if it sells through your own website, you do, wherever you have nexus. Selling skincare online covers how the two channels appear on the return.

Use tax

The tax a buyer owes on taxable goods bought without paying sales tax, typically from an out-of-state vendor, at the same rate as sales tax. A practice that buys gloves, numbing cream or a treatment bed from a supplier that charged no tax owes use tax on its return. Items consumed in providing treatments are taxable to the practice as the consumer; see sales tax on services and products.

Resale certificate

The document a registered practice gives a supplier to buy products tax-free because they will be resold with tax collected from the patient. It applies to skincare and devices sold at retail, not to injectables, gloves or supplies consumed in treatments, which the practice itself uses and must pay tax on. Using it on treatment supplies is a common audit finding.

Reporting and KPIs

Gross margin

Revenue less cost of goods sold, in dollars or as a percentage, by service line. Injectables carry product cost and a commission; a laser treatment carries consumables and provider time; retail carries wholesale cost. One blended margin hides which room makes money, which is why the chart of accounts separates them; med spa profit margins explains what to aim for.

Contribution margin

Revenue from a treatment less every cost that varies with it: product, consumables, provider commission and card processing. A $750 filler treatment with $280 of product, $75 of consumables, $110 of commission and $22 of card fees contributes $263 toward rent, salaries and profit (illustrative). It is the number to run before approving a promotion or setting a membership price.

EBITDA

Earnings before interest, taxes, depreciation and amortization: operating profit before financing costs and device write-offs. Buyers and lenders use it, usually after adjusting for a market-rate owner salary, so an owner-injector taking draws instead of a salary overstates it. Selling a med spa covers how clean books and a defensible EBITDA affect price.

Revenue per treatment room

Service revenue for the period divided by the number of treatment rooms, a measure of how fully the practice's fixed space is used. A four-room practice producing $120,000 a month earns $30,000 per room (illustrative); adding an injector without a free room changes nothing. It pairs with revenue per provider hour to show whether capacity or scheduling is the constraint.

Rebooking rate

The share of visits that end with the next appointment booked before the patient leaves. It is the leading indicator of recurring revenue for neurotoxin and membership patients, who return on a predictable cycle when rebooked and drift when not. The POS reports it by provider, and it belongs on the monthly KPI dashboard next to revenue per visit.

Retail attach rate

The percentage of service visits that also include a retail purchase. If 300 visits in a month produced 60 skincare sales, the attach rate is 20%. Small improvements here move gross margin more than most pricing changes, because retail carries no provider commission under most plans, and the number can be coached provider by provider from the POS report.

13-week cash flow forecast

A weekly projection of cash in and out for the next quarter, starting from the bank balance and built from the appointment book, payroll dates, distributor terms, device payments and tax due dates. It shows a practice with strong package sales whether it can cover payroll in a slow month; see our 13-week cash flow guide and why a med spa shows a profit but has no cash.

Bank reconciliation

The monthly proof that every bank, credit card, loan and merchant account in the books matches its statement, with every difference explained by timing. In a med spa the hard one is the merchant account, where settlements arrive net of fees and a day late, and the patient-financing account, where funded treatments arrive in batches. A close without reconciliations for every account is not a close.

Close calendar

The schedule of tasks and deadlines that turns a month's activity into finished statements: POS exports and counts due by a set business day, reconciliations, the deferred revenue rollforward, commission accruals, review and delivery. Med Spa Core closes by the tenth business day with the period locked afterward. Our monthly close checklist lists every step.

Accrual vs. cash accounting

Two timing rules. Cash books record revenue when paid and expenses when paid, so a package sale is income today and the injectables order is an expense today. Accrual books record revenue when treatments are delivered and product cost when used. Med spas need accrual books to be truthful; the return may still use the cash method with a year-end reconciliation; see cash vs. accrual for med spas.

Chart of accounts

The list of accounts the books are organized around. For a med spa it separates revenue by service line, carries deferred revenue, inventory and merchant clearing accounts, and splits provider cost from product cost, with each POS item mapped to exactly one account so the daily sales entry is repeatable. Our chart of accounts guide gives the structure for QuickBooks Online.

KPI dashboard

A one-page monthly report of the handful of numbers that move a med spa's profit and cash: revenue per visit, gross margin by service line, product and provider cost share, deferred revenue change, rebooking and retail attach rates, and cash conversion. It is built from closed books, not from the POS alone; KPIs for the monthly dashboard explains each one.

Working with an accountant

Enrolled agent (EA)

A federally licensed tax practitioner who has passed the IRS's three-part examination or qualified through IRS experience, with unlimited rights to represent taxpayers before the IRS, the same as CPAs and attorneys. A bookkeeper or unlicensed preparer cannot answer a notice for you. Jenny Gao holds both the CPA license and the EA credential; see how to choose a med spa accountant.

Attest services

Audits, reviews and compilations: engagements in which a CPA examines financial statements and issues a report on them under professional standards. Most med spas never need one unless a lender or buyer asks for it. Balance Partners does not provide attest services; the work is bookkeeping, monthly close, tax and fractional finance leadership, which leaves us free to prepare the books rather than opine on them.

Engagement letter

The written agreement that defines what the accountant will do, for which entities and periods, by when, for what fee, and what is excluded, along with what happens on termination, including notice and records. A Balance Partners proposal states scope, deliverables, timeline and a flat fee, and Med Spa Core is month-to-month after onboarding with thirty days' written notice; see how to switch accountants.

Fractional controller

A part-time controller who owns the close, the controls over discounts, refunds, tips and inventory, location-level profit and loss, and the MSO and professional-entity intercompany books, without a full-time salary. It fits practices past about $1 million or with two or more locations, and is scoped after a diagnostic as a flat monthly fee; see bookkeeper, accountant, controller or CFO.

Fractional CFO

A part-time chief financial officer who owns the forward view: the 13-week cash forecast, budget and reforecast, the economics of a new provider pay plan, the model for a second location or a device financing, and exit readiness. Hired for a named decision rather than a title, scoped after a diagnostic as a flat monthly fee, and delivered personally by Jenny Gao, CPA, EA.

Fractional tax director

A part-time tax strategist who handles quarterly projections, entity and owner-pay design, the treatment of the MSO management fee, multi-state registrations, equipment timing and notices, year-round rather than at filing time. The difference from preparation is explained in tax planning vs. tax preparation. Scoped after a diagnostic as a flat monthly fee.

Fit call

The twenty-minute first conversation about your locations, providers, POS and payroll systems, entity structure and what is not working, used to decide whether the practice and Balance Partners are a match. It is also where we say no to pre-revenue startups without a funded plan, return-only needs and owners shopping on price alone. Our onboarding guide describes what follows.

Diagnostic

The review of your QuickBooks Online file, POS exports, bank and payroll history, prior returns and sales tax filings that comes before any quote. It answers whether package liabilities were ever booked, whether inventory exists on the balance sheet, whether commissions tie to payroll and which periods need cleanup, and it produces the written proposal with scope, deliverables and a flat fee.

Cleanup

A one-time project that rebuilds prior months or years before monthly service begins: revenue restated from the POS rather than the bank, the package and gift card liability rebuilt from outstanding-balance reports, inventory from a count, commissions from production reports, and sales tax reconciled to what was collected. Quoted as a fixed fee after the diagnostic; our cleanup plan describes the sequence.

2026 figures at a glance

When to get help

If more than a few of these terms describe something your current books do not show (a package or membership liability on the balance sheet, injectables carried as inventory, commissions tied to the production report and payroll, retail sales tax reconciled to the POS), the vocabulary is not the problem; the close is. Med Spa Core delivers that close by the tenth business day with every one of these balances stated, from $1,500 a month, month-to-month after onboarding with thirty days' written notice, with every file reviewed by Jenny Gao, CPA, EA.

The engagement starts with a twenty-minute fit call and a diagnostic of your QuickBooks file and POS exports, followed by a written proposal with scope, deliverables and a flat fee. Request a fit call, and bring the term from this list that you have heard most often without an answer; it is usually the right place to start.

Jenny Gao, CPA, EA

Founder of Balance Partners, a CPA-led accounting, tax and fractional CFO practice for med spas. Florida-licensed CPA and IRS Enrolled Agent with more than 13 years of accounting and tax experience. Jenny writes and reviews every guide on this site. About Jenny

This guide is general educational information for owners of med spas and aesthetics practices in the United States and is not accounting, tax, legal, medical, payroll or financial advice for your situation. Rules change and vary by entity, state and facts. Balance Partners, LLC does not provide audit, review, compilation or other attest services. Last reviewed November 8, 2026.