GST and TDS Accounting Workflows in India: A Month-End Playbook for Growing Businesses

For most Indian businesses, the hardest part of tax is not the return itself; it is having clean, reconciled records ready when the return is due. GST accounting software can make that preparation far more orderly, but only if the workflow underneath it is sound. This playbook sets out a practical monthly rhythm for GST, TDS and bank reconciliation that a small finance team can actually sustain.

A note before we start: this article describes record-keeping workflows, not tax advice. GST and income-tax rules, rates, thresholds and due dates change, and how they apply depends on your business. Always confirm specifics with a chartered accountant or tax professional and with the official portals.

Why a fixed monthly rhythm matters

Tax work goes wrong when it is left to the last few days. Purchase invoices arrive late, vendor details are incomplete, a payment was made without deducting tax, and suddenly the team is reconstructing a month from email attachments.

A fixed rhythm spreads the work across the month and makes problems visible while they are still cheap to fix. The schedule below is a template to adapt, not a statutory calendar; your actual due dates come from the GST portal, the Income Tax Department and your advisers.

1. Week 1: Close last month's booksFinish posting sales, purchases, expenses and receipts for the previous month.
2. Week 1: Reconcile GST inputsCompare your purchase register with the supplier-reported data available on the GST portal.
3. Week 2: Review TDSConfirm deductions on payments made, and prepare deposits ahead of the due date.
4. Week 2: Hand over to advisersShare reconciled reports so returns can be reviewed and filed on time.
5. Week 3: Bank reconciliationMatch every bank line to a book entry and clear unexplained items.
6. Week 4: Clean-up and preventionFix vendor masters, chase missing invoices and note lessons for next month.

The GST side: reconcile before you file

Keep sales records return-ready

Your outward supplies, meaning the invoices you issue, form the basis of what you report. The cleaner your invoicing, the easier this step becomes. That means correct customer GSTINs, consistent place-of-supply logic, properly linked credit and debit notes, and no gaps in numbering. Our invoicing and billing software guide covers the controls that help here.

Match purchases to supplier data

Input tax credit (ITC) is where most reconciliation effort goes. The GST portal's own FAQs on Form GSTR-3B explain that GSTR-3B is a summary return in which taxpayers declare and pay their liabilities, and that several ITC fields are auto-populated from GSTR-2B, a system-generated statement built from what suppliers have reported in their own returns.

In practice, this means your purchase register and the supplier-reported data need to agree. A typical reconciliation sorts each purchase into one of a few buckets:

Your adviser will guide how each category should be treated in the return. The finance team's job is to make sure the list is complete and every line has a status and an owner.

Vendor master hygiene

A surprising share of GST mismatches trace back to vendor records: wrong GSTIN, an old address, or one supplier created twice under slightly different names. A short monthly review of new and edited vendors prevents a lot of downstream pain.

The TDS side: a four-part cycle

Tax deducted at source is a cycle with four repeating parts. Getting each part right depends on the one before it.

1. Deduct. When a payment or credit falls within a category where TDS applies, the correct amount is deducted at the correct time, based on the vendor's PAN and the nature of the payment.
2. Deposit. Deducted amounts are paid to the government within the prescribed time.
3. Report. Periodic TDS statements are filed with details of deductees and amounts.
4. Certify. Certificates are issued to deductees so they can claim credit.

A sound TDS workflow builds checks into the first step, because errors there ripple through everything else. Useful controls include:

• Recording PAN and the applicable payment category on every vendor record before the first payment.
• Flagging payments that may attract TDS at the point of approval, not after the money has gone.
• Keeping a running register of deductions by vendor and category, so deposits and statements can be prepared from one source.
• Reviewing lower-deduction or exemption certificates provided by vendors and noting their validity periods.

The Income Tax Department's TDS calculator is a useful reference point, and the department's site now presents the Income-tax Act, 2025 alongside the Income-tax Act, 1961. Because the legislative framework has been updated, check with your adviser which provisions, sections and rates apply to each period you are working on.

When you are the deductee

TDS also affects receivables. If a customer deducts tax before paying your invoice, the amount received will be less than the invoice value. Record the deduction against the invoice rather than treating it as a short payment, and track whether the corresponding credit appears for you later. Leaving these as unexplained differences makes year-end considerably harder.

Bank reconciliation: the check that catches everything else

Bank reconciliation is the plain discipline of matching every line on the bank statement to an entry in your books, and every book entry to the bank. It is unglamorous, but it catches duplicate payments, missed receipts, unrecorded charges and TDS deductions you did not know about.

A simple approach:

• Import or enter the full statement for the period.
• Auto-match the obvious items: exact amounts with clear references.
• Work through the remainder, oldest first, and give each one an explanation.
• Carry forward genuine timing differences, such as cheques issued but not yet cleared, with a note.
• Investigate anything unexplained beyond a set period rather than letting it age quietly.

A month-end close checklist

A disciplined month-end close ties all of this together. Adapt this list to your business and agree it with your accountant.

• All sales invoices, credit and debit notes for the month posted
• Purchase invoices and expenses posted, with missing ones listed
• Purchase register reconciled against supplier-reported GST data
• Every mismatch assigned a status and an owner
• TDS deductions reviewed against payments and vendor PANs
• TDS deposits prepared ahead of the due date
• Customer TDS deductions recorded against invoices
• Bank accounts reconciled with open items explained
• Reports shared with advisers for review before filing

What to expect from accounting software in India

When evaluating accounting software India teams can rely on, focus on how well it supports the workflow above rather than on promises. Reasonable expectations include clean vendor and customer masters with GSTIN and PAN fields, tax-aware invoices and bills, registers you can reconcile, TDS tracking, bank reconciliation tools, an audit trail and exportable reports for your adviser.

Be cautious of any tool, or any vendor pitch, that suggests software alone guarantees compliance. The rules are interpreted and applied by people, and responsibility sits with the business. Good software makes the work visible, consistent and reviewable; that is valuable enough.

Where Sampledge fits

Talk2Tax is the accounts and finance module in the Sampledge ecosystem, covering invoicing, receivables and payables, expenses, GST and TDS workflows and reporting. It is designed to help finance teams keep records organised and reconciliation-ready so that their accountants and advisers can review and file with confidence. It does not file returns on your behalf and does not replace professional advice.

Because Talk2Tax connects with SampCrew for HR records and with project and supplier data in Sampledge, costs such as supplier payments and staff expenses can be traced to their source. Research businesses may find our guide to sample supplier reconciliation a useful companion, and the HRMS software guide covers how HR data feeds payroll coordination.

To talk through your month-end process, get in touch with our team or read how Sampledge works.