VAT Billing Software ยท Guide

Preparing Monthly VAT Return Data in Nepal Step by Step

Updated 14 Oct 2026 ยท 8 min read ยท WebsNP team

Preparing VAT return data is mostly reconciliation. You are checking that what you billed, what you bought and what you recorded all tell the same story. A routine that you repeat every Nepali month turns the return from a stressful task into a short review. This guide describes that routine. It is about records, not tax advice, and it assumes you or your consultant will confirm deadlines, forms and any rule changes with the Inland Revenue Department at ird.gov.np.

Step 1: close the month's sales

Before you touch the figures, make sure every sale has an invoice. Check that:

  • Invoice numbers run without unexplained gaps.
  • Cancelled invoices are marked and kept.
  • Sales from every counter and branch are included.
  • Credit notes for returns are entered in the month they were issued.

Print or export the sales book for the Bikram Sambat month. Total the taxable sales, exempt sales and VAT charged. Compare the VAT total with the VAT output ledger in your books. They should match to the paisa.

Step 2: close the month's purchases

Gather every purchase bill. For each, confirm the supplier name and PAN, the bill number and date, the VAT shown separately, and that the bill is in your business name. Post them all, then export the purchase book. Separate purchases that relate to taxable activity from those that do not, such as items used for exempt sales or personal use. Which purchases carry claimable input credit is a matter of law, so list doubtful bills and ask your consultant.

Step 3: reconcile with the ledgers

Your accounting ledgers should have an output VAT account and an input VAT account. At month end:

  1. Output VAT ledger balance equals VAT total in the sales book.
  2. Input VAT ledger balance equals claimable VAT in the purchase book.
  3. Net payable or credit equals output less input, plus any credit carried from the earlier month.

If anything does not agree, find the invoice or bill responsible. Usual causes are a late posting, a backdated entry in the wrong period, a rounding difference or a bill posted to an expense without splitting the VAT.

Step 4: review the unusual items

Spend ten minutes on the exceptions. Large invoices, sales to related parties, credit notes against previous months, advance receipts and imports all deserve a second look. Write one line of explanation next to each in a notes column. If your return is ever questioned, those notes save a lot of time.

Step 5: prepare the summary

Create a one-page summary with:

LineSource
Taxable salesSales book
Exempt salesSales book
Output VATSales book, agrees to ledger
Taxable purchasesPurchase book
Input VAT claimablePurchase book, agrees to ledger
Credit brought forwardPrevious month summary
VAT payable or credit to carryCalculated

Hand this, with the exported books, to the person who files the return. Keep a copy with the month's invoices.

Step 6: file, pay and archive

Filing and payment follow the process and deadlines set by IRD, which you or your consultant should confirm at ird.gov.np. Once done, save the filing confirmation and payment receipt, then lock the month in your software so entries cannot be changed by accident. If a correction is needed later, make it as an adjustment in the current period with a clear note, in line with your consultant's advice.

Documents to keep with each month's file

Build a simple folder, physical or digital, for every Nepali month. Put in it the exported sales book, purchase book, the one-page summary, the filing confirmation, the payment receipt, a list of cancelled invoices and credit notes, and your notes on unusual items. When someone asks a question about Bhadra two years later, you will find the answer in minutes rather than days. Keep the folder for as long as the law requires you to retain records, which you should confirm with your consultant.

Why Nepali months matter

VAT periods follow the Bikram Sambat calendar. Entering dates in AD and converting later invites errors around month boundaries, especially on the last day of a month when sales may be entered after midnight. Use BS dates throughout, and make the system reject backdated entries in a locked month.

How software shortens the routine

With VAT billing software, steps one and two become a review of exceptions because invoices and purchase entries feed the books directly. Step three is automatic when billing and ledgers share one database. Step five is a report. Your time goes to judging the unusual items instead of adding columns.

Next step

Try this routine on last month's figures and note where it breaks. The break points are where software helps most. Look at the WebsNP VAT billing software and the accounting software that shares the same records. Send last month's sales book on WhatsApp to +977 9846280400 and we will show the same month in a demo.

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