The first Making Tax Digital quarterly update, due 7 August, was the rehearsal. Most practices got through it on adrenaline and a few late nights. The second one, due 7 November, is the real test, because it arrives in the middle of everything else: year-ends, VAT quarters, and the first clients asking why their bookkeeping fee went up.
The update itself is not hard. It is a set of totals for 6 July to 5 October, sent from your software. The hard part is what sits underneath: every client on MTD needs their purchase invoices recorded digitally before you can send anything that is true. If you have thirty sole traders and landlords over the £50,000 threshold, that is thirty piles of PDFs, photos and email attachments that need to be in Xero, QuickBooks or Sage 50 by mid-October.
This is a plan for doing that without hiring a temp to type.
What the 7 November update actually needs
Under MTD for Income Tax, the quarterly update is a summary of income and expenses for the period. No accounting adjustments, no accruals, no capital allowances. Those wait for the year-end declaration.
But "summary" hides a rule that matters: the totals have to come from digital records kept in software. A figure typed into a spreadsheet from a paper bundle is not a digital record of that bundle. The invoice itself needs to be in the system, coded, and ideally attached.
So the job between now and October is not "work out the numbers." It is "get the documents in." If the documents are in and coded, the update writes itself.
Step 1: Count the piles before you touch one
Open your client list and mark three things for each MTD client:
- Where their purchase invoices arrive. Email, a shared folder, a phone camera roll, a carrier bag. Most clients are two of these.
- Roughly how many per quarter. A landlord with three properties might have fifteen. A sole-trader electrician might have two hundred.
- Which software they are on. Not everyone is on Xero. A mixed practice usually has QuickBooks and a couple of stubborn Sage 50 holdouts.
Total the invoice count. If it is over a thousand across the practice, manual entry at two to three minutes each is forty to fifty hours of someone's October. Put your own numbers into the free invoice processing cost calculator and you will see what that quarter is actually costing you in staff time.
Step 2: Give every client one place to send things
Chasing thirty clients for documents in October is how deadlines get missed. Set the intake up now, in September, while there is slack.
For each client, pick one channel and tell them plainly: "Forward supplier invoices to this address" or "Drop them in this folder." Then stop accepting the carrier bag. A client who hands you paper in the last week of October gets a polite note that it will go in the next quarter's update unless they photograph it and send it today.
If you use the AI Invoice Importer, each client organisation gets its own forwarding address on the Professional and Agent plans. Invoices forwarded there are extracted and queued for review automatically, so the intake and the processing become the same step.
Step 3: Extract, do not type
This is where the time goes, and where it can stop going.
A modern extraction tool reads the supplier, invoice number, date, net, VAT and total from a PDF, a photo, or a HEIC straight off an iPhone, in seconds. The importer does this with Claude AI and posts the result into Xero or QuickBooks directly, or produces a Sage 50-compatible CSV for the holdouts. Supplier matching is saved per client organisation, so the second invoice from a builder's merchant codes itself.
Two things to insist on from any tool you use for this, ours or anyone's:
- A review screen. You are signing the update. You need to see the extracted figures beside the original document and fix anything wrong before it posts. Extraction that is right 98% of the time still needs a human on the other 2%.
- Duplicate detection. Clients forward the same invoice twice. Suppliers send a statement and a copy invoice. Posting both inflates expenses and understates profit, and that is the kind of error that gets noticed later. We wrote about catching duplicate bills in Xero because it is the most common mess we clean up.
If you want to see how this looks in practice, importing supplier invoices into Xero without manual entry walks through a batch end to end.
Step 4: Batch by client, not by day
Do not process invoices as they arrive. Process a client at a time.
Upload the whole quarter's pile for one client in one batch, up to 200 files at once on the paid plans, review the extracted figures in a single sitting, post, and move on. Switching between clients costs more than the invoices do. A bookkeeper who clears one client per hour finishes thirty clients in a week of afternoons, with October to spare.
Keep a simple tracker: client, invoice count, posted, reviewed, update sent. When 7 November arrives you want to be looking at a column of ticks, not a list of names.
Step 5: Reconcile before you send
The update is a summary of what is in the software. If the bank feed has a payment with no bill behind it, the expense is missing from the update. If a bill is posted twice, it is overstated.
A quick bank reconciliation per client before sending catches both. It takes minutes if the bills are in, and it is the last chance to notice the invoice a client forgot to forward.
The quick checks, for free
Not every question needs a system. If a client asks what the VAT is on a figure, what their mileage claim should be, or how much interest they can add to a late invoice, use a calculator and get on with your day. We publish free VAT, mileage, CIS, late-payment and invoice-cost calculators for those moments. No sign-up, no email capture.
What this looks like by mid-October
- Every MTD client has one intake channel and knows it.
- Every purchase invoice for 6 July to 5 October is extracted, reviewed and posted, with the document attached.
- Every client is bank-reconciled to 5 October.
- You send thirty updates in the first week of November, from software, without a weekend lost to typing.
The 7 August update was survived. The 7 November one can be quietly done.
If you want to try the importer on a real client, the free plan handles 15 invoices a month with no card. Pick your most disorganised client, upload their quarter, and see whether the review screen beats the keyboard. If it does not, you have lost an afternoon, not a deadline.