Bookkeeper vs. CPA vs. Fractional CFO: Who Does What?

“Do I need a bookkeeper or an accountant?” is one of the most common questions I get from business owners. The honest answer is usually: you need both, and maybe a little more.

Each role does a different job. When you know what each one does, it gets much easier to figure out what’s missing.

The quick version

Role	Main job	Looks at	Typical question they answer
Bookkeeper	Records transactions accurately	The past, month by month	“Are the books right?”
CPA / tax pro	Tax returns, tax planning, compliance	The past year, for the IRS	“What do I owe, and how do I owe less?”
Fractional CFO	Explains the numbers and guides decisions	The future	“What should I do next?”

The bookkeeper

Your bookkeeper keeps the day‑to‑day records clean: categorizing transactions, reconciling bank accounts, running payroll, managing bills and invoices.

Good bookkeeping is the foundation for everything else. If the books are wrong, every report, tax return, and decision built on them is wrong too.

It’s enough when: you’re small, your finances are simple, and you mostly need accurate records.

The CPA

A CPA focuses on taxes and compliance. They prepare your returns, help you plan to reduce taxes, and make sure you’re meeting IRS and state requirements. Some also do audits or reviews.

Most CPAs see your business once or twice a year. That’s the nature of tax work.

It’s enough when: your main concern is filing correctly and not overpaying.

The fractional CFO

This is the part most small businesses are missing. A fractional CFO gives you CFO‑level financial guidance part time, for a monthly fee, instead of a full‑time executive salary. You may also hear it called financial advisory or outsourced CFO services.

A fractional CFO takes the numbers your bookkeeper produces and helps you actually use them. That looks like cash flow forecasting, pricing and margin analysis, reading your P&L and balance sheet in plain English, and planning for hiring or growth. (This is business advisory, not investment advice.)

You need it when: you’re growing, cash feels tight even though you’re profitable, or you’re making big decisions on gut feel.

How they work together

The best setup is a team:

• The bookkeeper keeps the books accurate every month.

• The fractional CFO reviews the numbers with you and helps plan ahead.

• The CPA uses clean books to file taxes and plan for the year.

Everyone does better work when the others are doing theirs.

A few real‑world scenarios

• A new coffee shop with $300K in revenue: a bookkeeper and a CPA are probably plenty for now.

• A contractor growing fast who can’t figure out why cash is always tight: time to add a fractional CFO.

• A law firm with a trust account: a bookkeeper who knows trust accounting, a CPA, and someone who understands the whole picture.

Where I fit

I’ve spent 20+ years in accounting, from bookkeeping to tax to CFO‑level work. At Altitude Advisory, I work as a fractional CFO and financial educator: helping you understand what your numbers are saying so you can make decisions with confidence. I work alongside your bookkeeper and CPA, not in place of them.

Not sure what your business needs? Book 30 minutes with me and we’ll sort it out.

— Kari