Most small businesses should expect to pay somewhere between $200 and $800 per month for outsourced bookkeeping. That range is wide because “small business” covers everything from a solo consultant with 30 transactions a month to a service company with employees, multiple bank accounts, and hundreds of transactions. Your specific cost depends on a handful of factors that are worth understanding before you start shopping around.

Transaction volume is the biggest driver. A business processing 50 transactions a month takes less time than one processing 500. More transactions means more categorizing, more reconciling, and more review. If you run a cash-heavy business or process a lot of small credit card charges, expect to land higher in the range.

The number of bank and credit card accounts matters too. Every account needs to be reconciled monthly. A business with one checking account and one credit card is simpler than one with three bank accounts, two credit cards, and a PayPal or Stripe account pulling in payments.

Payroll, sales tax, and accounts payable add to the cost because they add scope. Basic full-service bookkeeping typically covers transaction categorization, reconciliation, and financial reporting. When you start layering in bill payment management, invoicing, payroll support, or sales tax filings, each piece adds time and responsibility.

Industry complexity plays a role as well. A trucking company tracking per-load expenses or a medical practice dealing with insurance payments and adjustments requires more specialized attention than a straightforward consulting business. Specialized knowledge costs more because it delivers more.

One thing people forget to budget for is catch-up work. If your books are months or years behind, there’s a one-time cost to get everything current before monthly bookkeeping can start. That project-based cost varies widely depending on how far behind you are and how messy things got in the meantime.

The real question isn’t what bookkeeping costs. It’s what it costs you to not have it done properly. Business owners who try to handle it themselves often spend hours on work that a professional handles in a fraction of the time. Worse, they miscategorize expenses, miss deductions, and go into tax season with records that need significant cleanup. The money you think you’re saving often comes back as a bigger tax prep bill or missed opportunities to make better financial decisions.

If your business is growing and you need more than just record keeping, you might eventually want someone who can help you interpret the numbers, plan for taxes, and guide financial decisions. A Houston fractional CFO fills that role without the cost of a full-time hire. But solid monthly bookkeeping is the foundation everything else builds on, so start there and add services as your business needs them.