Document processing for CA firms: client documents collected, checked and read into your working files

Most of the work in a GST month, a TDS quarter or an audit starts with the client's documents. They arrive in pieces, in whatever way the client finds easiest, and someone in the office has to save each one, work out what it is and remember what is still missing. That part can run by itself.

An example month without it

A photo of a purchase bill arrives on a staff member's WhatsApp at 9 in the evening. The September bank statement comes as an email attachment to the partner. Another client drops off a pen drive. Each file gets saved somewhere, renamed if someone has time, and ticked off in someone's head.

In the week of the due date the questions start. Did this client send all of August's purchase bills? Which of these three PDFs is the September statement? The person who knows is on leave, and the file is on their phone.

That is an example, to show the kind of work involved.

What it costs

Most of the cost is your team's time, which is worth counting for one month (see Count it first). Some of it shows up as money:

• Input tax credit. Since 1 January 2022, a business can claim input tax credit only up to what is communicated to it in GSTR-2B.¹ A purchase bill missing from GSTR-2B is credit the client cannot claim yet, and finding it in the last week leaves little time to ask the supplier to report it.
• TDS statements. A statement delivered late costs ₹200 for every day it is late, under section 427 of the Income-tax Act, 2025, up to the amount of tax deductible.² The usual cause is one missing challan or PAN.
• The audit. This year the tax audit report for AY 2026-27 is due by 21 October 2026.³ An audit file that is complete early leaves the weeks before that date for the audit itself.

What we set up

1. One way in, whichever way the client sends. An upload link for each client, your office email address and your office WhatsApp number. Whichever the client uses, the file ends up in the same place. WhatsApp files come in by themselves when the number is on WhatsApp's official Business Platform; client updates in one place explains how.
2. A folder for each client and period, with one way of naming. Every file is saved the day it arrives, under the client, the period and the kind of document, for example "September 2026, purchase invoices". Nobody has to rename anything, and anyone in the office can find it.
3. A check against each client's list. Each client has a list for each filing: the GST month, the TDS quarter, the audit year. As files arrive they are ticked off, so the missing items are known at once. The follow-ups name only what is missing and stop when the list is complete, as in client reminders.
4. The documents read into sheets. Invoices go into a sheet with the GSTIN, invoice number, date, taxable value and tax. Bank statements go into a sheet of transactions, with each month checked for gaps, so a missing statement is noticed the day it is missing. The sheets are laid out for your accounting software. TallyPrime, for example, imports vouchers from Excel through a mapping template, and bank statements through its bank reconciliation screen.⁴
5. Purchase invoices compared with GSTR-2B. Your team downloads GSTR-2B from the GST portal as usual. The comparison lists the bills in the client's purchases that are not in GSTR-2B, and the lines in GSTR-2B with no bill, so the questions for the client or the supplier are ready.
6. A morning list for your team. Which clients' files are complete for each filing, which are still waiting, and which documents could not be read and need a person to look.

What runs by itself

• Saving and naming every file, from WhatsApp, email and the upload links.
• Ticking off each client's list as files arrive, and the follow-ups for what is missing.
• Reading invoices and statements into sheets, and the comparison with GSTR-2B once it is downloaded.
• The morning list of complete, waiting and unreadable files.

What stays with your team

• Checking the figures. Software can misread a blurred photo or a handwritten bill. Anything it cannot read with confidence is marked for a person instead of guessed, and your team checks the sheets before they go into the books.
• The accounting and the judgment. Which ledger, whether a credit is eligible, and what a mismatch with GSTR-2B means.
• The portals and the filing. Your team logs in to the GST and income tax portals and files, as it does now.
• The difficult client. The one whose bills all arrive in the last week, and that conversation.

What you need to start

Your client list, with what each client files. The lists you already send clients, or our starting lists: the ITR documents checklist, the TDS return checklist and the GST documents in our GST reminder templates. And access, in your own accounts, to the email, storage and WhatsApp your office uses. We tell you exactly what we would build, and what it costs, before any work starts.

Count it first

For one GST month, note the day each client's documents were complete, and how many files your team saved and renamed by hand. It shows where the time goes, and gives you a number to compare once the setup runs. The dates to count against are in our compliance calendar.

Questions CAs ask