Finance as a Service (FaaS) vs. Bookkeeper vs. Accountant: Which Do You Need?

Something shifts when a company raises money or takes on its first institutional investor. A board turns up wanting numbers by the tenth of every month, and the finance function has to grow up fast. The founder looks at the bookkeeper who has handled things so far and starts to wonder whether that still covers it.

You have a few options. The simplest is a bookkeeper who keeps your records current. Above that sits an outside accountant or CPA firm for the taxes and the work at year end. Then there’s a managed finance function, Finance as a Service (FaaS), which runs the whole operation for you. Plenty of companies use more than one of these at the same time. What matters is which one carries the load as you grow.

Once a company starts growing, working with an outside partner becomes the norm. In our 2026 CFO Survey, 87% of finance leaders at investor backed companies said they already work with an outside finance and accounting partner. By the time investors and a watchful board are involved, bringing in help is how the work gets done.

Bookkeeper, accountant, or full finance function: which rung are you on?

People swap these three titles around as if they describe a single job. Each one is different.

A bookkeeper	An accountant or CPA firm
Logs your transactions and keeps accounts reconciled.	Works on top of your ledger a few times a year, files taxes, prepares reviewed financials at year end, runs the independent audit a lender or investor asks for.

Neither operates your finance function week to week.

That week to week operation is the third rung, and running it takes an entire finance department: the accounting systems and a reporting platform, the processes that close the books and hold controls in place, and a staffed team of accountants, controllers, and senior finance leaders.

Finance as a Service bundles those three layers and runs them for you. At Consero, we operate that function on our platform and staff it with our own team, so you get the monthly close, GAAP financials, internal controls, AP and AR, and board and investor reporting for a monthly fee, without hiring and managing the department in house.

What a bookkeeper and a CPA firm do well

A good bookkeeper is quick and reliable at recording transactions and keeping the ledger clean, and the price is low. If you run an early company on cash books and nobody outside is demanding reports, that generally covers what you need.

A CPA firm earns its money somewhere else entirely. They handle your business taxes and the questions that come with operating across states. They also run the independent review or audit at year end that a lender or investor requires. That last piece has to come from an outside firm, because independence is the whole point. So a CPA firm stays in the picture no matter who handles your finance day to day.

Signs you’ve outgrown your bookkeeper

You’ve outgrown a bookkeeper when the business needs its finance function run each month, closed and reported up to a board, and a tidy ledger no longer answers the questions landing on your desk. Here are the signals:

• A board or an investor is asking for GAAP financials on an accrual basis, and your cash books can’t produce them.
• Your monthly close keeps slipping past the tenth, or there’s no close happening at all.
• You’re getting ready for a raise or an audit, and the diligence questions are exposing gaps in the books.
• One person touches every transaction, which leaves you with no separation of duties.
• You need technical accounting that a bookkeeper doesn’t touch, like revenue recognition under ASC 606, deferred revenue, or consolidating several entities.
• Reporting to the board means pulling spreadsheets by hand, and the numbers are stale by the time anyone reads them.

One of these on its own, a good bookkeeper can absorb. Once several are true at the same time, you’ve moved onto the third rung, where the finance function has to be run month after month by a team built for it.

Bookkeeper vs. accountant vs. Finance as a Service: by situation

What you need depends on where your company sits, so here’s how it breaks down situation by situation.

Scenario	Consero (FaaS + SIMPL®)	Bookkeeper	Accountant / CPA firm	Best fit
Monthly close on a board deadline	Run end to end, closes in five to ten days	Records only, no close	Not a monthly role	Consero
GAAP financials on an accrual basis	Full accrual close and reporting	Cash basis categorizing	Converts at year end, not ongoing	Consero
Ongoing management and board reporting	Live dashboards through SIMPL®	Manual export at best	Periodic, not operational	Consero
Internal controls and separation of duties	Built in from day one	One person, no separation	Advises only	Consero
Technical accounting each month (ASC 606, revenue recognition)	Run in house	Out of scope	Project work, not ongoing	Consero
Statutory audit or attestation	Cannot audit our own books	Out of scope	The service, and independent	Accountant / CPA
Business and state income taxes	Not the service	Out of scope	Core competency	Accountant / CPA
Compiled or reviewed financials at year end	Provides the books, leaves the signoff to the CPA	Out of scope	The service	Accountant / CPA
Under a million dollars with simple books	Overkill for the stage	Right sized and lowest cost	Overkill and pricey	Bookkeeper
Daily data entry and reconciling	Included, more than you need	Core competency	Overqualified	Bookkeeper

The pattern follows the rung you’re standing on. If all you need is the records kept at the lowest price, that’s a bookkeeper. The independent tax work and the audit always belong to a CPA firm. Everything in the middle, the monthly close and the controls and the reporting a board relies on, belongs to a finance operation.

A growing company with investors on the cap table needs that middle rung running the show, a CPA firm alongside it, and the old standalone bookkeeper folded into the operation. Our guide to staying ready for an audit or diligence at all times goes deeper on that.

Our clients close their books in five to ten business days, with financials ready for an audit and board reporting that stays current. Want to know where your finance function stands right now? Get your free assessment.

What Finance as a Service includes beyond a bookkeeper

Finance as a Service hands you a finance function that already runs, so you don’t have to assemble it yourself. Here’s what’s inside it:

• The software: A curated stack of the strongest tools for your ERP, your payables and receivables, your close, and your reporting, set up and run for you, with AI built into the back office work.
• The operating model: A standard way of running things, so the monthly close, the accrual accounting, the controls, and the technical accounting all happen as a matter of course.
• The team: A dedicated finance group that covers everything from data entry up to controller and operating leadership, overseen from North America, so the whole thing never rests on one person.

The Finance as a Service Consero runs is agentic. AI agents carry out the hands-on work of the close: they code transactions, match invoices to purchase orders, surface the exceptions that need a second look, and gather the data a reconciliation calls for. Each result then passes to an accountant who reviews it and owns the number. The agents handle the repeatable steps across the whole workflow, so the close moves faster and problems show up early, while our team stays on the judgment calls, the controls, and the reporting your board reads. Because the same people supervise those agents month after month, every figure the AI touches stays reviewed, traceable, and ready to stand up in an audit.

On top of all that sits SIMPL®, our reporting layer. It pulls your ledger, your payables, your receivables, and your key numbers into one live view written in plain business language. This is the part that makes the whole thing feel like a function someone is running for you. Your CFO and your board can each open SIMPL® and see the same current numbers from their own point of view.

The tiers are modular, so you take only what you need. At the core you get transactional accounting for payables and receivables, the monthly close with controller support, and your reporting and compliance. Financial planning and analysis comes as an option, and so does strategic CFO support. Because our own team runs the tools, you end up with a finance operation and nothing to license or staff on your side.

When each option is the right call

Choose a bookkeeper if:

• Your revenue is under a million or so and the books are simple, kept on a cash basis.
• No outside investor or board is asking you for GAAP financials or a monthly package.
• What you need is transactions recorded and accounts reconciled, at the lowest cost you can find.

Keep a CPA firm for:

• Your business income taxes and any filings that reach across state lines.
• The independent review or audit at year end that a lender or an investor requires.
• Work that never goes away. No finance operation can replace an independent firm.

Choose Consero if:

• You need a dependable monthly close that hits a deadline, with GAAP financials on an accrual basis.
• A board or a lender expects current reporting and clean books that can survive an audit.
• You’re heading toward a raise or an exit, and being ready for diligence matters.
• You want a modern finance function without spending twelve to eighteen months and a small fortune building a team in house.

Under a million dollars with simple books, a bookkeeper plus a CPA at tax time will cover you. Once a board or a lender or a coming raise enters the picture, somewhere around three to five million dollars or the first institutional round, the ongoing function is the rung that needs upgrading.

How Consero compares on cost, close speed, and readiness

• More than 150 private equity and venture capital firms have portfolio companies running on our platform.
• An average client NPS of 80, well above the industry mark of 36.
• Savings of 20 to 40% against building the same finance team yourself.
• A monthly close that lands in five to ten days.
• A finance function fully up and running in 30 to 90 days.
• More than 50 companies taken all the way to exit, whether a sale, a move between sponsors, or an IPO.

When you stack a bookkeeper and a CPA firm and then a controller hire on top, you’re paying for pieces of the job on separate invoices, and no single one of them runs the whole function. Building it yourself means buying an ERP and standing up the software for your close and your reporting. Then you hire and keep a team of six to ten people to operate it. Plan on twelve to eighteen months before the first clean board package shows up.

We stand up the same operation in 30 to 90 days for 20 to 40% less, with the software and the automation and the team rolled into one fee you can predict.

It also keeps the size of your finance spend in check. In our 2022 CFO Survey, most finance leaders said finance should cost under 10% of revenue and run on fewer than ten people at a company doing 10 million dollars. That target is easier to hold when the function is operated for a set fee, since the price tracks the work itself and doesn’t climb every time you would otherwise add a head.

Where growing companies end up

For a company with investors and a steep growth curve, the bookkeeper versus accountant question stops mattering quickly.

Once aboard that wants numbers on a schedule, or a lender asks for covenant reporting, or an owner floats the next raise, the needs of the business change.

Now the finance function has to be run, month after month, for everyone upstream who reads it, and that takes a team built for the job. When the reporting pressure is on and a deal sits somewhere on the horizon, this operated middle rung is the one worth getting right.

Our model gives a growing company reporting a board and its investors can rely on, and it does that without the year and a half it takes to build the same thing. When diligence or an audit comes around, you’re fully prepared.

Frequently asked questions

A few questions that come up when people are weighing these options:

How does Consero’s pricing compare to a bookkeeper or a CPA firm?

For pure data entry, a bookkeeper costs less. A CPA firm bills by the project for tax and audit work. We’re priced as one solution, a set fee for the whole operating function we run, which covers the close, the controller work, the reporting, and the controls. That runs 20 to 40% below what the same team would cost you to build. Compare it function to function, against the fully loaded cost of the ongoing team we take the place of.

Can Consero take over from my bookkeeper in the middle of the year?

Yes. We get a finance function up and running in 30 to 90 days, and that includes stepping in partway through the year, cleaning up whatever needs it, and converting the books from a cash basis to accrual so they’re current and ready for GAAP.

We’re heading into an audit or a raise. Can Consero get our books ready in time?

Yes, as long as there’s a reasonable runway. We keep the books ready for an audit or diligence as part of the everyday operating model and work directly with your CPA or audit firm, so that readiness is already there when the deadline arrives, and nobody has to scramble for it.

Can a bookkeeper handle the monthly close?

Not the way a growing company needs it done. A bookkeeper records and reconciles transactions on a cash basis. A full monthly close goes further. It layers in accruals and GAAP adjustments. From there it sorts out the intercompany and revenue recognition entries, then runs a controls review that turns a raw ledger into financials a board can act on. That’s controller work, a step above bookkeeping, and it’s what a finance function delivers. We run that close in five to ten business days.

Is an AI bookkeeping app enough to replace a finance team?

These apps automate the grunt work of data entry and reconciliation, and that layer has gotten faster and cheaper. Running a finance function is a much bigger job. The monthly close, the judgment calls under GAAP, the internal controls, the technical accounting, the reporting a board sees, all of that still needs people who own the result. We put AI inside a function our own team operates, so the software handles the transactions while people handle the close and the controls and the reporting your board and your lender depend on.