What an Outsourced Accounting Firm Costs, and What the In-House Version Costs You

Every dollar of salary you pay carries about forty-three cents of everything else. BLS put private-industry compensation at $46.60 an hour in March 2026, with wages at $32.60 of that and benefits at $14.01, so wages are 69.9% of what an employee actually costs an employer and benefits are the other 30.1%. Run that backwards and a $95,000 accountant is a $136,000 line item before you've bought them a laptop or a NetSuite seat.

That's the number you should be putting next to a firm's monthly quote, and almost nobody does, which is why the outsourcing conversation usually gets decided on a feeling instead of a spreadsheet.

What does an outsourced accounting firm actually cost per month?

Quoted ranges in this category cluster into three tiers, and they've been stable enough over the last couple of years that you can plan against them. Bookkeeping only, meaning categorization, bank recs, a monthly package you mostly don't read, runs roughly $500 to $3,000 a month depending on transaction volume and how many bank and card accounts you're running. Full-function outsourced accounting with a real close, AP and AR run for you, and someone accountable for the numbers runs roughly $3,000 to $6,000. Add a controller or fractional CFO layer on top, meaning forecasting, board reporting, audit prep, and you're at $5,000 to $12,000 and up.

Those are quoted ranges rather than a survey, and the spread inside each tier is enormous, because pricing in this category is driven by transaction volume, entity count, how clean your books are on day one, and whether the firm wants your logo. A five-entity SaaS company with revenue recognition and a Delaware parent is a different animal from a nine-location restaurant group, and both of them will get quoted somewhere in that $3,000 to $6,000 band by firms that have no business quoting the same number.

The way to get honest pricing is to make firms compete without knowing who else is in the room, which is the whole reason we built the firms directory to take anonymous requests. You'll get a spread of three or four real quotes on your actual volume rather than a single anchor number that you then negotiate against yourself.

What does the in-house version cost once you load it properly?

Take the BLS load factor and apply it honestly. A $75,000 staff accountant costs about $107,000 fully loaded. A $95,000 senior costs about $136,000. A $150,000 controller costs about $215,000. That's before recruiting fees, which run 18% to 25% of first-year base through an agency, before the software they'll need, and before the two to four months of ramp where you're paying full freight for partial output.

So the real comparison for most small and mid-sized companies is a $6,000 a month firm at $72,000 a year against a $136,000 senior accountant, and put like that the firm looks like a steal. The counterweight, and it's a real one, is that the firm gives you a slice of several people's attention while the hire gives you all of one person's, and there are companies where the difference between forty hours of someone who knows your business and four hours of someone managing eleven clients is the difference between closing on day five and closing on day twenty.

Pull real bands before you build either side of this model, because the salary number in your head is probably two years stale. Our salary and market data refreshes nightly off live postings across 109 metros, so you can see what the market is actually committing to pay rather than what a PDF said last winter.

Where outsourcing actually breaks

Outsourced accounting holds up beautifully right up until your business gets weird, and then it falls over fast. The failure modes are consistent enough to list. Inventory and cost accounting is the big one, because most generalist firms genuinely can't do it and will not tell you that until month four. Revenue recognition under ASC 606 with any real contract complexity is the second. Multi-entity consolidation with intercompany volume is the third. And the fourth is speed, because when your investor asks a question on Tuesday afternoon, a firm's answer arrives Thursday, and there's a size of company where that lag stops being acceptable.

The other thing that breaks is ownership. A firm produces your financials, and you still own them, and if you don't have anyone internally who can read them critically then you've outsourced the work and the judgment at the same time, which is how companies end up finding a two-year error during diligence. Keep one person in-house who can push back on the firm, even part-time. That's the cheapest insurance in this whole equation.

Worth knowing too: the firm you're evaluating may not be independent anymore. A lot of mid-tier firms have taken private equity money, which changes their pricing and staffing incentives in ways that show up eighteen months into your engagement. We wrote about what PE ownership means for the firm you hire, and it's worth five minutes before you sign a multi-year agreement.

Why the hiring market makes this call harder than it used to be

The talent story has genuinely improved, and it's still not fixed, and holding both of those at once is the only accurate read. AICPA and CIMA reported in June 2026 that accounting enrollment at four-year undergraduate programs rose 8.9% to 205,180 in spring 2026, a third straight year of increases, against 1.3% growth across all majors. That's real momentum and it's a good damn sign for the profession.

It also does nothing for you this quarter. Those students are three to five years from being useful in a controller seat, so the mid-career squeeze that made outsourcing attractive in the first place is still on, and the experienced people in the market know it. That's the honest version: the pipeline is healing at the bottom and the shortage that affects your hire is in the middle, and those two facts are going to coexist for years.

What I'd do

Model both sides on the same basis before you talk to anyone. Firm cost is the monthly quote times twelve plus onboarding plus the cleanup project they'll quote separately. In-house cost is base times 1.43 plus recruiting plus software plus a ramp discount on the first quarter. Put those two annual numbers next to each other and a lot of the ambiguity disappears.

Then decide on complexity rather than price. If your accounting is high-volume and low-weirdness, outsource it and spend the savings on better systems from the software directory, because a good stack makes a firm cheaper to run. If your accounting is low-volume and high-weirdness, hire, and use a specialist recruiter rather than a generalist who'll send you eleven resumes that all say Excel. And if you're somewhere in the middle, which most companies are, a bookkeeper plus a fractional CFO often beats both, which we broke down in fractional CFO versus outsourced accounting firm.

Frequently asked questions

How much does an outsourced accounting firm cost per month?

Roughly $500 to $3,000 a month for bookkeeping only, $3,000 to $6,000 for full-function outsourced accounting with a real monthly close, and $5,000 to $12,000 and up once you add controller or fractional CFO work. Transaction volume, entity count and the state of your existing books drive most of the variance inside each tier.

Is outsourcing cheaper than hiring an in-house accountant?

Usually yes on annual cost, because a $6,000 a month firm runs $72,000 a year while a $95,000 senior accountant costs about $136,000 once you apply the BLS benefits load of roughly 43% on top of salary. The firm buys you less dedicated attention for that money, so the answer flips as your volume and complexity grow.

What is the difference between an outsourced accounting firm and a fractional CFO?

An outsourced accounting firm does the work, the transactions, the reconciliations, the close, the financial statements. A fractional CFO interprets it, builds the forecast, handles the board and the bank and the fundraise. Plenty of companies need both, and buying the CFO before the books are clean is the most common sequencing mistake.

When should you bring accounting back in-house?

Common triggers are an audit requirement, a fundraise or sale process, inventory or revenue recognition complexity your firm can't handle, or a close that keeps slipping past day ten. Headcount and revenue matter less than complexity does, and a $6 million company with five entities often needs in-house help sooner than a $20 million company with one.

How do you compare outsourced accounting quotes fairly?

Ask every firm for the same scope in writing, specifically who owns the close, what the turnaround is, what's excluded, and what a cleanup project costs separately. Ask for the staffing model, meaning who actually touches your books and how many clients they carry. Quotes without those three answers aren't comparable, they're just numbers.

The companies that get this right treat it as a decision they'll revisit every eighteen months rather than a permanent identity. Model it, pick one, write down the conditions that would make you switch, and get back to running the business.