QuickBooks & Xero Setup, Cleanup and Migration

For: Smaller businesses starting fresh, switching platforms, or sitting on books they no longer trust.

Book a free books review

Books you don’t trust are worse than no books

A QuickBooks or Xero file goes bad slowly, then suddenly: a few miscoded months, a bank feed that duplicated transactions, an old bookkeeper’s workarounds nobody understands — and one day you realize you make decisions by looking at the bank account because the reports can’t be trusted.

The fix isn’t starting over blind, and it isn’t living with it. It’s a systematic cleanup by someone who’s done hundreds of them.

What we do

Diagnostic first. We review your file and give you a straight findings memo: what’s wrong, what it affects, what it takes to fix. Free, and yours to keep either way.

Historical cleanup and catch-up. Miscoded transactions recoded, duplicates removed, bank and credit-card accounts reconciled period by period, undeposited funds cleared, balances tied to source documents. Every fix documented.

New-file setup done right. Starting fresh? We build the file with a chart of accounts that fits your business, clean opening balances, and bank feeds configured properly — so it doesn’t drift into the same swamp.

Migrations with verified balances. QuickBooks Desktop ↔ Online, QuickBooks ↔ Xero — with trial balances reconciled before and after cutover.

What you get

A clean file, current books, reports that match reality, and a system your accountant stops apologizing for. Most clients keep us for monthly bookkeeping afterward — but that’s your call, not a condition.

Why Tallmont

Cleanups are forensic work. We do them with the same discipline we bring to multi-entity groups and ERP migrations — trace to source, document everything, fix the cause. No plugs, no “close enough.”

Frequently asked questions

How do I know if my QuickBooks file needs a cleanup?

Classic symptoms: the bank balance in QuickBooks doesn't match the actual bank, negative balances that make no sense, a huge 'Ask My Accountant' or 'Uncategorized' balance, undeposited funds growing forever, or your tax preparer sending a long list of adjustments every year.

How long does a cleanup take?

Most single-entity cleanups take 2–6 weeks depending on transaction volume and how many periods are affected. We scope it precisely after a free review of your file.

Can you migrate QuickBooks Desktop to Online, or QuickBooks to Xero?

Yes — Desktop ↔ Online and QuickBooks ↔ Xero in both directions, with trial balances verified before and after so nothing is lost in translation.

Will the cleanup mess up my prior tax filings?

No. We reconcile the books to what was filed, isolate genuine prior-period errors, and document anything your tax preparer needs to know — cleanly, in one memo.

Book your free books review

Thirty minutes, your current setup, and a candid read on what it would take.

No retainers pitched, no obligation. You'll get a findings memo either way.