/ 01
Are the books closeable?
We check categorisation completeness, bank-rec status, payroll posting, VAT-relevant flags.
/ Snap suite · Bookkeeping · Free
BookSnap, Clean books fast.
BookSnap is the free UK decision-support app for owner-managed bookkeeping. Find out whether your books are clean enough to close the month, file with HMRC, or hand to a lender, in under 10 minutes. Built for operators who are not accountants but cannot afford to file dirty numbers.
FREE
Bookkeeping period-close health check
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Built by ATTOH Digital · UK SME-focused
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Built by ATTOH Digital · UK SME-focused
/ Free tool · Sole-trader Self Assessment
What will you actually owe HMRC?
Enter your numbers, BookSnap estimates your Income Tax, Class 4 NI, take-home, and the amount to set aside each month. Instant, in your browser, on 2025/26 rates.
Local estimate
Estimate only, not tax advice. Covers Income Tax + Class 4 NI for a UK sole trader on 2025/26 rates (personal allowance taper included). Verify on GOV.UK or with an accountant before filing.
Estimated take-home (after tax + NI)
£0
Taxable profit£0
Income Tax£0
Class 4 NI£0
Total to HMRC£0
Set aside / month£0
Readiness signal·
/ What this app answers
Three questions, one app.
Every Snap is scoped to one operator decision. BookSnap answers three sub-questions that, together, give you the call you needed to make on bookkeeping this week.
/ 02
Where are the leaks?
Mis-categorised expenses, missing receipts, supplier duplicates, costed against likely overpayment.
/ 03
What ships to the accountant next?
A clean handover pack: open queries, decision log, and which entries the accountant should sign off.
/ Who this is for
Built for the operators who actually have to decide.
Owner-managed UK Ltds turning over £100K-£2M who do their own bookkeeping in Xero, QBO, or FreeAgent and want a 10-minute monthly close-readiness gate before they file or hand over.
/ How it works · 4 steps
From question to answer in under 10 minutes.
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01
Connect or upload
Xero/QBO/FreeAgent OAuth, or drop in a CSV export.
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02
BookSnap reads the period
Categorisation, bank-rec status, supplier matching, payroll posting, VAT flags.
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03
Review the close score
A 0–100 score with the top 5 issues named in plain English.
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04
Fix or escalate
Inline guidance for owner-fixable issues; one-click handover pack for the accountant on the rest.
/ How it compares
Where Xero is the ledger, BookSnap is the tax decision in front of it.
Xero is a paid cloud-accounting platform you set up and run your books in. BookSnap answers the question that comes first: what you owe, and whether you need to register.
Xero
- A paid accounting platform, from £7/mo
- Account, setup and bookkeeping to migrate
- Built to run your books, not to make the call
BookSnap
- Free, no login, a working take-home calculator
- Built on UK Self Assessment, CIS and VAT rules
- Routes you to a human when it matters
Know your take-home and whether MTD or VAT applies, free, before you adopt and learn a paid ledger.
/ FAQ · before you ask
What people ask before they use BookSnap.
01 Does this replace my accountant? +
No, it makes their job cheaper. Most fixed-fee accountants quote based on how dirty the books are. BookSnap helps you stop overpaying for triage.
02 Which accounting platforms work? +
Xero, QuickBooks Online, FreeAgent on launch. Sage 50 + Sage Business Cloud Accounting on the roadmap.
03 Is my data safe? +
Read-only OAuth scope. Nothing is written back. Data is processed in-memory and not retained after the session unless you opt in to monthly auto-checks.
04 Will the score satisfy HMRC? +
The score is internal, HMRC does not see it. But a clean BookSnap score correlates with a clean HMRC filing posture (no late corrections, no enquiries opened in the year).
/ Pair this Snap
ReceiptSnap
Pair with ReceiptSnap to feed clean expense data into BookSnap.
Open ReceiptSnap →Ready to ship your own Snap?
BookSnap is one of 22 free Snap apps. If your sector is not on the list, we will build one, scoped, shipped, supervised, in 4 to 8 weeks. Same engineering core, same source-freshness CI, your decision priced against the outcome it produces.