Last reviewed October 7, 2026 · By the NYBACS advisory team
Short answer
A bookkeeper records and categorizes transactions; an accountant adjusts, reconciles and prepares financial statements and tax inputs; a controller owns the month-end close, accounting policies and internal controls; and a CFO uses the numbers to set financial strategy, raise capital and manage cash and risk. In the US, 'accountant' does not automatically mean CPA — only licensed CPA firms can issue audit or review reports.
Key takeaways
- The four roles form a stack — recording, preparing, controlling and deciding — and each depends on the layer below being done well.
- A Certified Public Accountant is licensed by a state board; attest services such as audits and reviews are restricted to licensed CPA firms.
- Anyone preparing federal tax returns for pay needs an IRS Preparer Tax Identification Number (PTIN), but only CPAs, attorneys and enrolled agents have unlimited rights to represent taxpayers before the IRS.
- Early-stage companies rarely need all four roles full-time; fractional controller and CFO support fill the gap.
- The most common gap is the controller layer: companies hire for strategy before anyone owns the accuracy of the numbers.
Side by side: who does what
| Bookkeeper | Accountant | Controller | CFO | |
|---|---|---|---|---|
| Core question | What happened? | Is it recorded correctly? | Are the numbers complete, accurate and controlled? | What should we do next? |
| Typical tasks | Recording transactions, invoices, bills, bank matching | Adjustments, reconciliations, financial statements, tax schedules | Close ownership, policies, controls, audit liaison, review | Forecasting, fundraising, capital allocation, pricing, risk |
| Main output | Up-to-date ledger | Statements and tax-ready files | Reliable monthly reporting and control environment | Plans, models, investor and board communication |
| Time orientation | Past (days) | Past (months) | Past and present | Future |
Titles are used loosely, and in small companies one person or firm often covers several columns. What matters is that every column is covered by someone.
Accountant, CPA and tax preparer are not the same thing
Accountant is a general job description in the US, not a protected title. A Certified Public Accountant (CPA) has passed the Uniform CPA Examination and met state licensing requirements, and only licensed CPA firms may perform attest engagements such as financial statement audits and reviews.
Tax preparation follows a separate set of rules. Anyone who prepares federal returns for compensation needs a PTIN from the IRS. Representation before the IRS — in an examination, appeal or collection matter — is unrestricted only for CPAs, attorneys and enrolled agents, who are licensed by the IRS itself. Other preparers have limited rights, tied to returns they prepared.
Foreign credentials such as a Chartered Accountant qualification from India, the UK or elsewhere are highly respected but do not by themselves authorize US attest work. A cross-border company often relies on its home-country accountants for group matters and on US-licensed professionals for US audits and tax representation.
Where handoffs between the roles break down
- Bookkeeper to accountant: transactions are categorized, but nobody checks that balances reconcile, so errors are inherited by the financial statements.
- Accountant to tax preparer: the books are not closed for the year, so the preparer reconstructs numbers under deadline.
- Controller to CFO: forecasts are built on numbers that later change, undermining board and investor confidence.
- CFO to bookkeeper: new metrics or reporting needs are defined, but the chart of accounts and coding rules are never updated to capture them.
Each break is fixed by clear ownership: who signs off the close, who owns the chart of accounts, and who answers external questions.
A typical example in a foreign-owned startup: the bookkeeper codes an inbound wire from the founder's home-country company as revenue, nobody at the accountant or controller level reviews it, and the CFO's model then shows revenue growth that does not exist. The error only surfaces when the tax preparer asks for the related-party schedule for Form 5472, or when an investor's diligence team compares revenue with customer invoices. Every role worked as designed; the missing piece was a review step between them.
Which roles a company needs at each stage
| Stage | Typical setup |
|---|---|
| Pre-revenue, founder-funded | Part-time bookkeeping; year-end accounting and tax preparation by licensed professionals |
| Early revenue | Monthly bookkeeping and close; accountant review; tax preparer |
| Seed or Series A funded | Bookkeeping plus fractional controller; virtual CFO for model, board and investor reporting |
| Scaling or audit required | In-house or outsourced accounting team, controller (fractional or full-time), CFO, independent auditor |
| US subsidiary of a foreign group | US bookkeeping and controller support coordinated with the parent's finance team; US tax professionals; group or local auditor as required |
How fractional support combines the roles
For many startups and foreign-owned US companies, the efficient answer is a single external team covering bookkeeping, controller review and virtual CFO work, with licensed tax professionals and an independent auditor engaged separately where needed. This keeps the stack connected without four separate hires.
The one safeguard is review independence: the person who records a transaction should not be the only person who reviews it. Within a fractional team, that means different people for preparation and review, with the founder or CEO approving payments.
Common mistakes to avoid
- Assuming the bookkeeper is also checking the accuracy of their own work.
- Giving someone a CFO title while they mainly do bookkeeping, leaving strategy and control unowned.
- Assuming a home-country chartered accountant can sign a US audit report.
- Expecting the tax preparer to fix a year of uncategorized books during filing season.
- Having no single owner of the month-end close.
- Choosing a US tax preparer without checking whether they can represent the company before the IRS if a notice arrives.
NYBACS 360° support
How NYBACS helps
- Diagnoses which layer of your finance function is missing — recording, preparing, controlling or deciding.
- Provides bookkeeping, controller review and virtual CFO support from one coordinated team.
- Coordinates with licensed CPAs, enrolled agents and independent auditors for tax filing, representation and attest work.
- Defines a responsibilities matrix so every task in your finance function has an owner and a reviewer.
- Bridges US-licensed professionals and your home-country accountants for cross-border groups.
Frequently Asked Questions
Does my US company need a CPA?
Not for bookkeeping or management reporting. You need a licensed CPA firm for an audit or review, and many companies choose a CPA or enrolled agent for tax preparation and IRS representation.
What is an enrolled agent?
An enrolled agent is a tax professional licensed by the IRS after passing a comprehensive exam, with continuing education requirements. Enrolled agents can represent taxpayers before the IRS on any tax matter.
Can one person do all four roles?
In a very small company, a founder or a single outsourced provider often covers several. The risk is that nobody reviews the work independently, so build in at least a second person's review as soon as possible.
Is a controller the same as a finance manager?
Titles vary between companies. What defines a controller is responsibility for the close, accounting policies, controls and the accuracy of reported numbers.
When should we hire a full-time CFO?
Usually once finance becomes a daily strategic function — larger financing rounds, multiple entities, a sizeable finance team or plans for a public listing. Before that, fractional CFO support is often more cost-effective.
