Most owners who ask whether to hire a bookkeeper are not really asking about cost. They are asking whether the time spent on books is the highest-value way to spend their hours, and whether the books are right when they do them themselves.
This is a practical framework for working through it.
Where DIY actually works
DIY bookkeeping works when the business is simple, the transaction volume is small, and the owner has the discipline to run a short routine on a schedule. A solo service business with one bank account, one card, and a handful of vendors can stay clean with an hour a month.
DIY also works when the owner genuinely enjoys the visibility — some owners get useful business intuition from doing their own books and would not give that up.
- Low transaction volume.
- Simple business model with one or two revenue streams.
- One bank account and one card.
- Owner willing to run a monthly routine.
Where a bookkeeper earns the fee
A bookkeeper earns their fee when the business has enough transaction volume, complexity, or stakes that mistakes are expensive — or when the owner is consistently not getting the books done on time on their own.
Common signs: multiple bank accounts, payroll, inventory, customer subscriptions, multi-entity structures, or a year-end CPA experience that has involved cleanup work.
Where AI bookkeeping fits in the middle
There is a real middle ground that did not exist a few years ago. Businesses that are too complex for DIY but not at the scale where a full bookkeeper fee makes sense have a new option: AI bookkeeping that runs continuously, with the owner staying in the loop for narrow questions.
This works because the parts of bookkeeping that scale with transaction volume — categorization, matching, reconciliation — are the parts an AI can take on reliably. The judgment work stays with the owner and the CPA.
What never changes
Whatever option you pick, the owner still owns the books. The CPA still owns tax. Reconciliation still has to happen. Source documents still have to be kept.
The choice is about who does the work, not about whether the work matters.
Where Bonnie fits
Bonnie is built for the middle of the spectrum and for the DIY end that is tired of the routine work. Categorization, reconciliation, source-document handling, and live P&L are handled continuously. Narrow questions route to you, the owner.
For businesses that also work with a human bookkeeper, Bonnie reduces the entry-level work that bookkeepers used to spend most of their hours on — which lets that relationship focus on judgment, advisory, and the CPA handoff.
Picking the right approach
- Estimate how many hours bookkeeping takes you today.
- Decide whether those hours have a higher-value alternative use.
- Check whether the books actually get done on time when you do them.
- Score the complexity — accounts, revenue streams, employees, multi-entity.
- Weigh the cost of a bookkeeper, AI bookkeeping, or both against the cost of a year-end cleanup.
- Re-evaluate when the business meaningfully changes shape.
There is no universal right answer to `bookkeeper or DIY.` There is a right answer for your business, at the stage it is in today, and a different right answer two years from now.