Catch up bookkeeping cost in 2026 runs from roughly $500 for a few months of simple, low-volume work to more than $10,000 for a high-volume, multi-year project. Most established small businesses land between $1,500 and $5,000. The price depends far more on how messy the records are than on how many months have passed.
This guide is for owners in Los Angeles who are behind on their books and want a straight answer before they call anyone. You will learn what drives the price, what typical ranges look like by months behind, how firms actually build a quote, and seven practical ways to keep the bill down. We write from our own cleanup work as a bookkeeping firm in Santa Monica.
What catch up bookkeeping cost depends on
Every cleanup quote we prepare comes down to five inputs. Two of them are obvious, and three of them surprise most owners.
- Months behind. The obvious one. However, twelve clean months often cost less than four chaotic ones.
- Transaction volume and account count. Three bank accounts, four credit cards, a loan, and two payment processors mean far more reconciling than one checking account.
- Data quality. Missing statements, personal spending mixed into business accounts, and duplicate entries from a broken bank feed all add hours. This is the biggest swing factor.
- Complexity. Payroll, California sales tax, inventory, job costing, and multiple entities each add a layer that must tie out to a filing.
- Filed years. If a tax return was already filed on top of bad books, the cleanup has to reconcile to that return or document the difference for your CPA. That coordination takes time.
Because of the last three, two businesses that are both “a year behind” can receive quotes that differ by a factor of five. So the useful question is not “how many months” but “how many account-months, and how many red flags.”
Typical ranges by months behind
The table below combines what we see in Los Angeles with a published national benchmark from SDO CPA’s 2026 catch-up pricing guide. Treat both as orientation, not a quote.
| Months behind | National benchmark (SDO CPA, April 2026) | What we typically see for LA small businesses |
|---|---|---|
| 1 to 3 months | $300 to $500 | $500 to $1,000 for low volume |
| 4 to 6 months | $500 to $1,500 | $1,000 to $2,500 |
| 7 to 12 months | $1,500 to $3,500 | $1,500 to $5,000 |
| More than a year | $3,500 to $8,000 and up | $5,000 to $10,000 and up for high volume |
The same guide notes that businesses with payroll, S corporations, and partnerships run 30 to 50 percent higher than the base ranges. In our experience, that matches Los Angeles closely, and sales tax filings push it further.
How firms actually price a cleanup
There are two models. Hourly billing is simple but open-ended, and owners hate not knowing the total. A fixed quote is what most firms, including ours, now use. Here is how we build one.
- Inventory the file. We count account-months (each bank or card account times each month behind), list the red flags (unreconciled accounts, negative balances, uncategorized transactions, undeposited funds, loans with no liability account), and note any filed tax years.
- Estimate the hours. Each account-month and each red flag carries a time estimate from past projects.
- Add a contingency. Cleanups always uncover one more problem, so we build in a margin instead of sending a surprise invoice.
- Quote a fixed price. You know the number before we start, and the price only changes if the scope does.
That inventory step is why we begin with a $495 bookkeeping review. It produces the account-month and red-flag count, and it tells you exactly what the fixed quote covers. Our earlier post on what to know before a bookkeeping cleanup covers what to expect from that review.
Seven ways to keep catch up bookkeeping cost under control
- Gather every statement before you ask for a quote. Missing statements are the most common reason a cleanup stalls. Download PDFs for every account and every month, including closed accounts.
- Stop mixing personal and business spending today. Every personal charge in a business account is a transaction someone has to identify and move. Open a separate card if you have not already.
- Connect bank feeds and grant accountant access. A bookkeeper working inside QuickBooks Online or Xero with live feeds moves several times faster than one working from PDFs and email.
- Do not let the backlog cross a filed tax year. Once a return is filed on top of bad books, the cleanup has to tie to that return. If you are close to a filing deadline, talk to your CPA about timing before the return goes out.
- Fix causes, not symptoms. A payment processor that deposits net of fees, or a loan coded as income, creates the same error every month. Ask the bookkeeper to correct the setup so the problem does not return.
- Answer questions in one batch. Most cleanups pause on a list of “what was this?” questions. Block an hour, answer them all at once, and the project keeps moving.
- Move to monthly service when the cleanup ends. A month of cleanup typically costs two to four times a month of ongoing bookkeeping for the same business. Falling behind again is the most expensive option.
The Los Angeles wrinkle: sales tax and city filings
In LA, a backlog rarely stays a bookkeeping problem. If you collect sales tax, months of unreconciled books usually mean the CDTFA returns were filed from estimates, and the cleanup has to reconcile them. Likewise, the Los Angeles business tax renewal is based on gross receipts, so wrong revenue in the books can mean a wrong renewal. Payroll adds the EDD to the list. Our post on bookkeeping cleanup and IRS data matching explains why those mismatches get noticed.
How Books LA handles this
We scope every catch-up project with the $495 review first, then quote a fixed price and a timeline. During the work we reconcile every account to the bank, separate personal spending, correct the setup problems that caused the mess, and document what changed for your CPA. Afterwards, most clients move onto a monthly package starting at $770, which is what keeps the backlog from coming back.
Doing the books yourself? Our free DIY Monthly Close Checklist lists the 12 checks we run every month, on one page.
Frequently asked questions
How much does catch up bookkeeping cost per month behind?
Roughly $150 to $300 per month behind for a simple business, $300 to $600 for a medium one, and $600 or more for a complex one with payroll, sales tax, or inventory. Those are orientation figures. The real number depends on how many accounts you have and how clean the data is.
Is it cheaper to do the catch-up myself?
Sometimes, if you have one account, low volume, and time. In practice, most owners who start a DIY cleanup hand it over half done, and the bookkeeper then has to undo part of it. Our post on bookkeeper versus DIY bookkeeping lays out the math.
How long does a bookkeeping cleanup take?
A few months of simple work can be done in one to two weeks. A full year for an established business usually takes three to six weeks, mostly because of the time spent waiting for statements and answers to questions. Multi-year projects run longer.
What do I need to provide?
Bank and credit card statements for every month, loan statements, payroll reports, sales tax filings, payment processor reports, and any tax returns already filed for the period. Accountant access to QuickBooks Online or Xero, if you have it, saves the most time.
Will the cleanup change a tax return that was already filed?
The cleanup itself does not change a return. If the corrected books differ from a filed return, we document the differences for your CPA, who decides whether an amended return is needed. That is an income tax decision, so it belongs with them.
Does a fixed quote ever go up?
Only if the scope changes, for example if a forgotten account turns up or the period grows. That is why the inventory step matters. A thorough review up front means the quote already includes the problems, not just the months.
Can I spread the cleanup cost out?
Many firms, including ours, will stage a large project by year or quarter, so you pay as each stage is delivered. Ask for that structure if the total is a stretch. Staging also lets you start monthly service sooner on the current period.
If you are behind and want a fixed number before you commit, book a short call and we will tell you what the review would cover.
This post is general information. Books LA provides bookkeeping services and does not advise on income tax. We work with our clients’ CPAs on income tax matters, so confirm any question about filed or amended returns with your CPA.
