Free closed-months check

Find out if a number moved after you signed off.

Connect Xero read-only and Postlock scans your last 6 closed months for anything posted or edited well after its period was closed. Takes 90 seconds. No card, nothing to install.

What it scans

Every document dated inside a month you've already closed, but entered after that month was done - a backdated invoice, a correcting journal, a bank line synced in late. Each one is a number that moved after you'd already reported it.

It knows month-end doesn't finish at midnight on the 31st: anything entered within your normal close window (default 7 days, adjustable) is treated as routine close activity and left out. The next week is flagged as worth a look; beyond that is counted as drift.

  • Read-only Xero connection · nothing is ever changed
  • Your last 6 closed months, scanned in one pass
  • Respects your close window · routine close postings don't count
  • Every change named · the document, who posted it, when
  • A total £ figure · what moved, in one number
90 secondsConnect, scan, done. No baseline snapshot needed.
postlock.co/drift-report/example
Example report · 6 months scanned · Mar–Aug 2026
6 documents posted well after their period closed £17,915 total
MonthDocumentPostedAmount
May 2026JNL-009241 days late8,650.00
Apr 2026BACS-447132 days late2,000.00
Jul 2026INV-229812 days late · worth checking725.00

An illustrative example; yours will show your own numbers.

Get yours

Run it now. About 90 seconds.

Sign up free, connect Xero read-only, and the check runs immediately.

No card. Your last 6 closed months scanned in one pass, every late document named. If it finds nothing, you get the all-clear in writing - worth having either way.

Check my closed months now

Not ready to connect anything yet? Fair enough - book a 30-minute call and bring your questions, or email hello@postlock.co and we'll run the check for you personally.

Read-only, and nothing is kept beyond the scan.

Postlock connects to Xero read-only - it can never change your ledger. If you don't create an account, your Xero access is discarded once the report is sent.