Every client job,
on track.

Roll each BAS forward, collect the client's documents, sign it off and export the time.

100% free, open source alternative to
Karbon, Financial Cents and TaxDome

Run Blotter Read the docs

Free and open source, MIT licensed.

Client uploads

Bank statements for the quarterReceived

bank-jul-sep.csvAccept

Reviewer signs off

Quarterly BAS · Jul–Sep 2026Signed off

Riley Tan

Next quarter ready

Quarterly BAS · Oct–Dec 2026Open

100% free.

Free as in code, free as in cost. MIT licensed, and your clients' documents stay in your own account.

MIT License

One link for every document.

Send a reminder with a private upload link. Your client uploads each file without an account; you accept it or ask again.

Morgan & Co Bookkeeping

Documents for Quarterly BAS

Bank statements for the quarterAccepted

Sales invoices and receiptsReceived

Purchase receipts and billsRequested

Choose a file to upload

A second pair of eyes, recorded.

The preparer submits. The assigned reviewer signs off with a note, and every decision is in the audit log.

Review

Decision

Sign off

Review note

Bank reconciled; GST coding checked.

Record decision

Time, exported once.

Each person's time is recorded at their own rate. Approve an export once and its CSV never changes.

Billing 2026-10 · $617.50

ApprovedDownload CSV

Also included

Job templates
Roles and rates
Agent preparations
Client list import
Practice archive
Audit log

Try it on one client.

Run next quarter's BAS for one client through Blotter. Keep everything else as it is.