Estimate Catch-Up Bookkeeping Cost by Months of Backlog
Estimate the one-time project cost to bring your books current. Months behind × complexity-adjusted rate, anchored to ProAxis's published 2026 catch-up pricing of $300–$600 per month of backlog for standard small-business books. Books above the standard range get a free review instead of a number.
Planning estimate only — not an offer. Specific pricing scoped in engagement letter. See Disclaimer.
How Catch-Up Bookkeeping Is Priced
Catch-up bookkeeping is a one-time project that brings a backlog of unreconciled months current. It is priced separately from ongoing monthly bookkeeping because the work is project-shaped — there is a defined scope (the months behind) and a defined deliverable (clean financials through the most recent month).
Two factors drive the estimate. Months of backlog is the multiplier — six months behind is roughly twice the work of three months behind. Complexity per month determines the per-month rate. A solo freelancer with one account catches up at about $300–$350 per month of backlog. Multi-entity, inventory, or heavy-payroll books run higher and are quoted after a free call. Urgency affects the timeline, not the price. ProAxis does not charge rush fees, so a faster timeline does not change the estimate.
ProAxis publishes catch-up pricing at $300–$600 per month of backlog for standard small-business books (typical published range, not an offer). The calculator below estimates total catch-up cost based on the inputs you provide. Specific pricing is confirmed during a free scoping call after a sample bank statement and a QuickBooks snapshot are reviewed. The agreed price is documented in a written engagement letter signed before any work begins.
Your Numbers
Number of months between the last reconciled period and today. If books were last reconciled on Jan 31 and today is July 31, enter 6.
$
Annual revenue or current run-rate. Separates a solo profile from a small business.
Bank deposits + checks + credit card charges per month, all accounts combined. Drives reconciliation labor per month.
Each account is a separate reconciliation per month of backlog.
Each entity = separate set of books to catch up.
"Never started" and "incomplete" are typical. "Messy" or "reconstruction" adds a cleanup uplift.
Faster timelines require same-week material delivery from the client and dedicated bookkeeper time. ProAxis does not charge rush fees.
Estimate only — not an offer.
The figure below is a planning estimate as of 2026-10-08. It uses the values you entered and ProAxis's published 2026 catch-up rate. That rate is $300–$600 per month of backlog for standard small-business books, and complexity sets where you land within it. Books above the standard range get a custom quote instead of a figure. That covers more than one entity, any inventory, or payroll for 6 or more employees. It also covers cleanup that pushes the rounded rate past $600 a month. It is not an offer, not a binding quote, and does not create a CPA-client relationship. Specific pricing depends on the cleanliness of existing data, availability of bank statements for the back period, current chart of accounts, prior bookkeeper quality, and whether year-end close adjustments are needed within scope. Specific pricing is scoped during a free 30-minute call (after we review a sample bank statement and a QuickBooks snapshot) and documented in a signed engagement letter before any work begins. Results vary by client. ProAxis Tax & Accounting Services accepts no liability for reliance on this output. See full Disclaimer.
Estimated Catch-Up Project Cost
Per-Month Rate
$400 – $450 /mo
Per month of backlog, complexity-adjusted
Months of Backlog
6 months
Standard timeline (4-8 weeks)
Estimated Catch-Up Total
$2,400 – $2,700
Estimate as of 2026-10-08
One-time project cost. Ongoing monthly bookkeeping is separate.
Why this range
• Above-average transaction volume per month-of-backlog (+1)
Want a CPA to review this estimate? ProAxis checks the numbers against your full situation in a free consultation.
Share a few details about your books. A licensed CPA will follow up within 2–3 business days with next steps. Free, virtual-first, no obligation.
Free Bookkeeping Quote
Who are you?
What best describes you?
Licensed CPA • AICPA Member • Authorized IRS e-File Provider
Important: Catch-Up Is a One-Time Project; Ongoing Bookkeeping Is Separate
The calculator uses ProAxis's published 2026 catch-up range of $300–$600 per month of backlog for standard small-business books (the canonical pricing pillar at Outsourced Bookkeeping Cost 2026 — NJ, NY & PA) and positions your result within that range by complexity. Multi-entity, inventory, or heavy-payroll books (6 or more employees) run higher and are quoted after a free call.
The total reflects one-time project cost only. Ongoing monthly bookkeeping after catch-up completes is a separate recurring fee — use the Bookkeeping Cost Calculator to estimate that.
Tax return preparation for back years is a separate engagement. The catch-up project produces clean financials; tax returns flow off those financials but are scoped and priced separately. Plan for both if you have unfiled returns.
Faster timelines require same-week material delivery from the client. ProAxis does not charge rush fees. ProAxis cannot rush a catch-up that the client cannot accelerate on the document-gathering side.
"Reconstruction" book condition (missing bank statements, unusual circumstances) requires special handling. The calculator approximates it with a 30% uplift, and results whose rounded rate passes $600 a month become a custom quote. Discuss specifics on the scoping call.
If books are more than 7 years behind, bank statement retrieval becomes a separate cost and timeline factor. Most banks retain digital statements for 7 years online; older periods require archive requests with separate fees from the bank.
The output covers labor only. Add roughly $50-$200/month for software for the months going forward (QBO, Gusto, Bill.com). Software costs for the back period are typically retroactive subscription fees that the client pays directly.
For a precise quote tailored to your specific situation, schedule a free 30-minute scoping call. ProAxis reviews a sample bank statement and a QuickBooks snapshot before quoting. The signed engagement letter documents the agreed catch-up price, plus the monthly fee if ongoing bookkeeping is added.
Pricing ranges reflect typical engagements but are not an offer. No CPA-client relationship is created by using this calculator. ProAxis is engaged only after a written engagement letter is signed by both sides.
Worked Example 1 — Solo Designer, 4 Months Behind, Standard Timeline
Illustrative example, not a client. Results vary.
A NJ freelance graphic designer single-member LLC, 4 months behind on books. Annual run-rate revenue $90,000. About 30 transactions per month during the backlog. 1 bank account + 1 business credit card. No payroll, no inventory. Single entity. Professional services. Books were "incomplete" (bank feeds connected but transactions never categorized). Standard 4-8 week timeline.
Complexity tier: Solo / freelancer profile.
Per-month rate: $300–$350/month-of-backlog (lower end of the published $300–$600 range because complexity is at the floor).
Total estimate: $1,200–$1,400. 4 months × $300–$350/month. Standard timeline. After catch-up completes, ongoing bookkeeping starts at the solo tier (use the Bookkeeping Cost Calculator).
Worked Example 2 — Small Agency, 6 Months Behind, Standard Timeline
Illustrative example, not a client. Results vary.
A Bergen County marketing agency LLC, 6 months behind. Annual revenue $350,000. About 120 transactions per month during the backlog. 3 accounts (operating, savings, one business credit card). Payroll for 3 employees. No inventory. Single entity. Professional services. Books were "incomplete." Standard 4-8 week timeline.
Complexity tier: Standard small-business books. Two complexity drivers: above-average transaction volume and payroll for 1–5 employees.
Per-month rate: $400–$500/month-of-backlog, inside the published $300–$600 range.
Total estimate: $2,400–$3,000. 6 months × $400–$500/month. Standard timeline. After catch-up, ongoing bookkeeping starts at the small-business tier (use the Bookkeeping Cost Calculator).
Worked Example 3 — Restaurant, 8 Months Behind: Custom Quote
Illustrative example, not a client. Results vary.
A Bergen County restaurant S-Corp, 8 months behind. Annual revenue $1,400,000. About 600 transactions per month during the backlog. 5 accounts (operating, savings, payroll funding, two business credit cards). Payroll for 12 employees (Gusto). Simple inventory. Single entity. Prior bookkeeper made categorization errors that need cleanup ("messy" book condition).
Result: above the standard range, so the calculator shows a custom quote instead of a figure. Payroll for 12 employees and inventory put it above the range. Messy books add cleanup work on top.
Why it needs a review: restaurant catch-ups often involve fixing daily-settlement reconciliations booked at gross instead of net of merchant fees. Tip-and-gratuity reclassification adds labor too. ProAxis reviews a sample bank statement and a QuickBooks snapshot, then quotes the project in writing.
Worked Example 4 — Multi-Entity Real Estate, 12 Months Behind: Custom Quote
Illustrative example, not a client. Results vary.
A NJ real estate investor with 4 LLCs, 12 months behind. Combined annual revenue $480,000. About 80 transactions per month combined during the backlog. 5 accounts. No payroll. AP only. Books in "incomplete" condition. The prior-year tax return is due in 3 weeks, so the owner selects the rush timeline.
Result: more than one entity, so the calculator shows a custom quote. Each LLC is a separate set of books to catch up.
Before choosing a faster timeline: an extension to file may remove the need to rush (see "After You Run the Calculator" below). A faster timeline also needs same-week delivery of bank statements and a QuickBooks snapshot. After catch-up, ongoing bookkeeping is quoted at the multi-entity tier (use the Bookkeeping Cost Calculator).
After You Run the Calculator
The estimate is the starting point. Here is how to use the result:
Compare the catch-up cost to the cost of NOT catching up. A late return with tax due faces a failure-to-file penalty of 5% of that tax per month, up to 25%. Unpaid tax adds a failure-to-pay penalty of 0.5% per month, up to 25%. In months when both apply, the IRS cuts the failure-to-file penalty to 4.5%. Sources: IRS failure-to-file penalty and failure-to-pay penalty pages, checked 2026-10-06.
If a deadline is pushing you toward a rush consider whether it is real. A tax-return extension (Form 4868 for individuals, Form 7004 for businesses; IRS pages checked 2026-10-08) extends the time to file, not the time to pay, without rushing the bookkeeping. Estimated tax should still be paid by the original deadline — but the books do not need to be done to make a reasonable estimate.
If the per-month rate is the binding cost a few drivers may be reducible. Closing redundant entities (the "do I really need 4 LLCs" question), simplifying the chart of accounts, consolidating bank accounts, or moving payroll to a bookkeeper-friendly platform like Gusto each reduce the ongoing complexity score and therefore the per-month rate.
Bundle the catch-up with ongoing bookkeeping. One engagement letter can cover the catch-up and any monthly bookkeeping that follows. Without a monthly routine, a new backlog can start to build. Outsourcing the recurring work is one way to keep the books current.
If unfiled tax returns are the actual problem ProAxis bundles back-tax-return preparation with the catch-up bookkeeping. The two are scoped separately but onboarded together. Discuss tax return scope on the scoping call.
Whatever the result, the next step is a free 30-minute scoping call. ProAxis reviews a sample bank statement and a QuickBooks snapshot, then confirms the catch-up price in a written engagement letter. No work begins until both sides sign it.
How to Use This Calculator
Enter months behind. Count from the last reconciled period to today. If books were last clean on March 31 and today is November 30, enter 8.
Enter annual revenue. Separates a solo profile from a small business. Use the run-rate if revenue varies by season.
Enter monthly transaction volume during the backlog. Drives reconciliation labor per month-of-backlog.
Enter bank + credit card account count. Each is a separate reconciliation.
Select payroll, inventory, entity count, and industry. Each adds complexity uplift.
Select existing book condition. "Incomplete" is most common. "Messy" or "reconstruction" adds cleanup uplift.
Select urgency. Standard is 4-8 weeks. You can pick a faster timeline; ProAxis does not charge rush fees.
Read the result. The calculator shows the per-month rate, total project cost, and contributing factors. Books above the standard range show a custom quote instead.
Frequently Asked Questions
What is catch-up bookkeeping and how is it priced?
Catch-up bookkeeping is the one-time project work that brings a backlog of unreconciled months current. It is priced separately from ongoing monthly bookkeeping because it is project-shaped. There is a defined scope (the months behind) and a defined deliverable (clean financials through the most recent month). ProAxis publishes catch-up pricing at $300–$600 per month of backlog for standard small-business books. This range is not an offer. Multi-entity, inventory, or heavy-payroll books run higher and are quoted after a free call. The calculator on this page estimates the total project cost for standard books: months behind multiplied by a per-month rate within that range. For books above the range, it points you to a free review instead of a number.
Why does a month of catch-up take more work than a month of ongoing bookkeeping?
Catch-up work involves more labor per historical month than ongoing forward-looking work. The bookkeeper must locate every bank statement, credit card statement, and supporting receipt. They reconstruct missing entries and investigate discrepancies that the business owner may not remember. They rebuild or fix the chart of accounts and produce financial statements that tie out to the bank balances. A typical month of catch-up work runs 1.5x-2x the time of a clean ongoing month because there is no momentum and no recent context. ProAxis publishes $300–$600 per month of backlog for standard small-business books. This range is not an offer. Multi-entity, inventory, or heavy-payroll books run higher and are quoted after a free call.
What inputs drive a catch-up bookkeeping quote?
Two factors drive the catch-up estimate. Months of backlog is the multiplier — six months behind is roughly twice the work of three months behind. Complexity per month determines the per-month rate. Take a solo freelancer with one bank account and 30 transactions a month. That catch-up runs about $300–$350 per month of backlog. A multi-entity real estate investor with 8 LLCs and complex AP is above the standard range. That investor gets a custom quote after a free call. Urgency affects the timeline, not the price. You may need books caught up in under 30 days. For example, an extended tax return may be due in 2 weeks. The calculator lets you pick a 2–4 week or under-2-week timeline. ProAxis does not charge rush fees, so the estimate stays the same. The standard timeline is 4–8 weeks. Both faster options need same-week delivery of your records.
I'm 18 months behind on my books — is that fixable?
It can be. Long backlogs build up when a prior bookkeeper leaves, a software migration fails, or an owner runs out of time. How far behind you are is not the limiting factor. What matters is whether bank statements and supporting documents are available for the back period. Banks generally retain digital statements for 7 years online, so any engagement under 7 years behind is typically straightforward. Beyond 7 years requires coordination with the bank's archive team and may add cost. The longer the backlog, the more important it is to start. Penalties accrue on unfiled returns. The IRS can substitute-file returns based on third-party data without your deductions. Bookkeeping work to recover detail gets harder over time as memories fade.
Will the catch-up project also include preparing my back tax returns?
No, not by default. The catch-up bookkeeping engagement produces clean financial statements through the most recent month. Tax return preparation for back years is a separate engagement. ProAxis bundles both into a single onboarding for clients who need them. Bookkeeping catch-up comes first, then tax returns flow off the cleaned books. But the engagement letter covers them as separate scopes with separate pricing. Tax return preparation pricing depends on entity type and year complexity. ProAxis publishes typical fee ranges in the tax services hub and confirms specific pricing during the scoping call.
Can ProAxis catch up books the prior bookkeeper messed up?
Yes. A catch-up project can start from books that a prior bookkeeper or accountant produced with errors. Errors include a wrong chart of accounts, miscategorized transactions, broken bank reconciliations, missing entries, or incorrect accruals. The work is similar to a from-scratch catch-up but starts from existing financial statements that are unreliable. ProAxis investigates and corrects rather than rebuilds when the existing data is largely usable. The complexity rating and per-month rate are typically higher for clean-up engagements because investigation work is more time-intensive than data entry. The calculator's complexity factors approximate this. High transaction volume and industry uplift push toward the top of the range, and messy books can push past it into a custom quote. More than one entity, any inventory, or payroll for 6 or more employees is always a custom quote.
Is the catch-up calculator output a binding quote?
No. The calculator returns a planning estimate. Specific pricing depends on facts the calculator does not see. Those include the cleanliness of the existing data and the availability and completeness of bank statements for the back period. They also include the chart of accounts in use and prior bookkeeper quality. They include whether year-end close adjustments need to be made within the catch-up scope. ProAxis confirms specific catch-up pricing during a free scoping call. That happens after ProAxis reviews a sample bank statement and a snapshot of the current QuickBooks file (read-only access). The agreed price is documented in a written engagement letter signed by both sides before any work begins.
Once catch-up is done, what does ongoing bookkeeping cost?
After catch-up completes and books are current, ongoing monthly bookkeeping resumes at the standard tier-based rate. ProAxis's published 2026 NJ/NY/PA monthly rates: solo or freelancer with simple operations $300-$500/mo. Small business under $500K revenue is $400-$700/mo. Small-to-mid $500K-$2M revenue is $700-$1,400/mo. Mid-market $2M-$5M revenue is $1,200-$2,500/mo. Multi-entity or complex is $1,800-$4,000+/mo. Use the Bookkeeping Cost Calculator to estimate the ongoing monthly fee separately. If you add monthly bookkeeping, one engagement letter can cover both the catch-up and the monthly retainer.
Related ProAxis Resources
DIY Bookkeeping Catch-Up Workbook — a month-by-month order of operations to bring your books current, with a DIY-vs-hand-off scope check
Tax Extension Filing — Form 4868 / Form 7004 to buy time for tax returns while catching up books
IRS Tax Resolution — for unfiled returns, IRS notices, or substitute-filed returns that need correction
Fractional CFO Services — controller-level review, financial modeling, and oversight that complements bookkeeping
Ready to Get Books Caught Up?
Schedule a free 30-minute scoping call with ProAxis Tax & Accounting Services. We'll review a sample bank statement and a QuickBooks snapshot, then confirm the catch-up price in a written engagement letter.
