Last updated: September 2026
OneBooks can reconstruct 12 months of transactions, reconcile accounts and clean up QuickBooks Online. Get back on track with fixed-price catch-up bookkeeping.
No obligation. 100% confidential.
A 12-month bookkeeping backlog is manageable. Most one-year catch-up projects are completed in 3 to 6 weeks from the day we receive your bank and credit card statements. Timing depends on transaction volume and how quickly you can supply records.
You don't have to face it alone. OneBooks specializes in exactly this situation—reconstructing past transactions from bank statements, credit card records, invoices, and receipts, then organizing everything in QuickBooks Online so your books accurately reflect your business's financial position.
New to the process? Start with our Catch-Up Bookkeeping Guide.
Not sure if your backlog is truly 12 months? Look for these common warning signs:
Your bank balance in QuickBooks doesn't match your actual bank statement for several months.
Entire months of deposits, expenses, or transfers aren't recorded in your books.
Payroll entries are incomplete, mislabeled, or missing from earlier in the year.
Your profit & loss and balance sheet don't match reality or your mental records.
Your accountant or tax preparer is asking for clean books, and you don't have them.
Personal credit card charges, category errors, or duplicate entries pile up month after month.
Our proven seven-step process takes the guesswork out of catch-up bookkeeping:
We review your current QuickBooks Online setup and identify exactly what's behind and what needs fixing.
We gather bank statements, credit card statements, invoices, receipts, and payroll records from your backlog period.
We enter all missing transactions into QuickBooks Online, category by category, month by month.
We reconcile every bank account and credit card to match your statements and eliminate discrepancies.
We fix errors, reclassify transactions, and correct any issues that would affect your tax return.
A senior bookkeeper performs a final review to ensure accuracy and completeness.
We hand you clean, tax-ready books and walk you through the results in a discovery call.
OneBooks offers fixed-price catch-up bookkeeping. A typical 12-month catch-up project costs $1,500 to $3,000, quoted as a fixed price before work begins. Where you fall in that range depends on transaction volume, number of accounts, and how much cleanup existing entries need. Shorter backlogs cost less — see our catch-up bookkeeping cost guide for pricing by backlog length.
Fixed price • All-inclusive • No surprises
Behind by less or more than one year? View our complete Catch-Up Bookkeeping Cost Guide for pricing by backlog length.
How long does it take? Most 12-month catch-up projects take 3 to 6 weeks once we have your statements. Clean, complete records land at the short end; missing statements or heavy transaction volume extend it. You'll get a target completion date with your fixed-price quote.
If you're behind on bookkeeping and have a tax deadline approaching, OneBooks handles the bookkeeping side: we clean up and reconstruct your books so they're accurate and tax-ready.
Bookkeeping
Tax return
Your CPA or tax preparer then prepares and files your tax return using the clean financial reports we provide. This is the standard workflow: bookkeeping and tax filing are separate services, and we coordinate directly with your CPA to ensure a smooth handoff.
No waiting. You don't have to choose between catching up and meeting your tax deadline—we do both in parallel.
If your books are completely empty for the past year, we can still reconstruct them using your historical records. We work with:
Even without QuickBooks data, we can rebuild your year from these sources and have you fully caught up. See the full list of documents needed for catch-up bookkeeping.
Catch-up means bringing your books current from a starting point.
Cleanup means fixing errors and reclassifying transactions so your books are accurate.
If your books have been partially recorded but contain errors—misclassified expenses, duplicate entries, personal charges mixed in, or incorrect account balances—OneBooks handles both catch-up and cleanup. We reconstruct what's missing and fix what's broken so you end up with one accurate set of books.
Learn more about Catch-Up & Cleanup Bookkeeping.
DIY catch-up bookkeeping makes sense if:
Professional help becomes worthwhile when:
A 12-month backlog usually falls into the "professional help" category. The time and stress saved almost always pay for itself.
Waiting compounds the problem. A one-year backlog is manageable. A two-year backlog is harder, more expensive, and takes longer to resolve. Interest, penalties, and compliance issues also accumulate if your taxes are filed late or incorrectly.
The best time to catch up is now. The longer you wait, the more months pile up and the harder the cleanup becomes.
Manageable
Harder, more expensive, longer
Once we deliver your clean, caught-up books, you have two paths forward:
Stay current on your own by recording transactions monthly. Many small business owners choose this route after the initial cleanup is done.
Hand off the day-to-day bookkeeping to a dedicated OneBooks bookkeeper and senior review manager who keep your books current, reconciled, and ready for tax season.
Either way, you'll know your books are accurate and your business finances are under control.
We're not a generic bookkeeping service. Here's what sets us apart:
We focus on catch-up and cleanup—it's what we do best.
Our team are QuickBooks Online specialists, not generalist bookkeepers.
All work is done by experienced U.S. bookkeepers. No offshoring.
We work with businesses in all 50 U.S. states, fully remote.
No hourly billing surprises. You know the cost upfront.
Every project gets a final review by an experienced bookkeeper.
Yes. OneBooks is a fully remote bookkeeping firm with team members across the United States. We primarily communicate with clients via Zoom for video calls and can also use Microsoft Teams. No in-person meetings are required—we handle everything online.
No issue. We can help migrate your books from QuickBooks Desktop, Xero, spreadsheets, and other systems. Our standard process includes the migration as part of your catch-up project, at no additional cost.
Yes. OneBooks works with businesses in all 50 U.S. states. All services are delivered remotely using QuickBooks Online.
We can help with that. OneBooks specializes in catch-up and cleanup bookkeeping and regularly reconstructs multiple years of past-due records. See our two-year catch-up guide for what changes when the backlog doubles.
Yes. Cleanup brings your books fully up to date and tax-ready, even if you've received an IRS notice.
Start by booking a Discovery Call, and we will get to learn about your business, your current bookkeeping backlog, and your goals. We'll answer your questions, give you a fixed price quote, and explain the next steps. No obligation.
Get your books caught up, cleaned up, and tax-ready. Book a free Discovery Call with our team.
No obligation. 100% confidential.
No obligation. 100% confidential.
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