When exactly you should hire an accountant
Are you still doing your own bookkeeping? Here are the 5 exact trigger events when a founder must hand over their finances to a CPA or risk thousands of dollars in penalties.
One of the most common mistakes early-stage founders make is paying $500 a month for an accountant while their business is making $0. The second most common mistake is waiting too long—until their business is generating $500k a year, their books are a complete mess, and they get hit with a $15,000 IRS penalty for unfiled payroll taxes.
So, when exactly should you stop doing the books yourself and hire a professional accountant or CPA? Watch out for these five critical trigger events.
Trigger 1: You Hit $100,000 in Annual Revenue (ARR)
When you are pre-revenue or making a few thousand a month, your bookkeeping is incredibly simple: cash in, cash out. Keep your personal and business bank accounts strictly separated, use a free tool like Wave or a basic spreadsheet, and categorized expenses yourself in 2 hours a month.
Once you cross $100,000 in revenue, the volume of transactions increases. At this point, you shouldn't be spending your Sunday afternoons matching receipts to bank statements. Your time is worth more generating sales. Action: Hire a part-time/fractional bookkeeper.
Trigger 2: You Hire Your First Official Employee
Paying independent contractors (1099s in the US) is easy—you just pay their invoice.
Hiring a full-time employee (W-2 in the US, PAYE in the UK) completely changes the game. Suddenly, you have to deal with:
- Income tax withholding
- Social security and Medicare contributions
- Unemployment taxes
- Workers' compensation insurance
Messing up payroll taxes is the fastest way to get your company assets seized by the government. They do not accept "I didn't know" as an excuse. Action: You need a CPA to set up your payroll system (like Gusto or Paychex) properly from day one.
Trigger 3: You Have Investors Requesting Reports
If you are bootstrapping, you only have to report to yourself and the tax authorities once a year.
If you take money from Venture Capitalists or Angel Investors, they will expect quarterly or monthly financial updates in a highly specific, standardized format (usually GAAP compliance using accrual accounting, not cash accounting). Investors lose confidence quickly if you hand them a messy, inaccurate spreadsheet. Action: Hire an outsourced accounting firm that specializes in startups.
Trigger 4: You Trigger Sales Tax or VAT Nexus
In e-commerce and digital services, crossing certain thresholds (e.g., $100,000 in sales or 200 transactions into a specific US state, or selling digital services to EU consumers) triggers "Economic Nexus".
This means you are legally obligated to collect, report, and remit sales tax or VAT to those specific jurisdictions—even if you have no physical presence there. Calculating nexus and filing tax returns in 20 different jurisdictions is humanly impossible for a busy founder. Action: You need an accountant armed with software like TaxJar or Avalara.
Trigger 5: You Ask "Is this a deductible expense?"
If you are spending hours on Google trying to figure out if you can write off your home internet, your client dinner, or a piece of equipment through Section 179 depreciation... you are wasting time and likely losing money.
A good CPA doesn't just record history; they legally alter your future tax liability. If a CPA charges you $2,000 for tax prep but finds $5,000 in legal deductions you would have missed, they are an asset, not an expense.
Summary
Don't rush to hire a CPA on day one, but do not hesitate the moment your business complexity—employees, multi-state sales, or investor capital—exceeds your basic spreadsheet capabilities. The cost of a good accountant is always cheaper than the cost of fixing compliance mistakes later.