Nepal Income Tax Return Filing — Deadlines & Step-by-Step Checklist

Everything you need to file your annual income tax return in Nepal on time, avoid penalties, and stay compliant.

Every year, as Poush approaches, tax offices across Nepal see a predictable surge in activity as individuals and businesses rush to file their annual income tax returns before the deadline. Filing at the last minute often leads to avoidable mistakes and missed exemptions. This guide lays out the deadline, who actually needs to file, the documents to gather, and the exact filing steps so you can complete the process calmly and correctly.

The Filing Deadline: End of Poush

The income tax return filing deadline in Nepal falls at the end of Poush (roughly mid-January) for the prior fiscal year. This gives taxpayers a window of a few months after the fiscal year closes in Ashadh (mid-July) to gather documents, reconcile accounts, and submit their return. Businesses with more complex accounts often start preparing well before Poush to avoid the year-end rush at tax offices and with their accountants.

Who Is Required to File vs Exempt (Salaried-Only With TDS)

Not everyone is required to file a separate annual return. Broadly:

• Businesses and self-employed individuals: Almost always required to file an annual return, since their income is not automatically taxed at source in the same way as employment income.
• Individuals with multiple income sources (e.g., salary plus rental income, or salary plus business income): Generally required to file, since the employer's TDS alone does not capture the full tax picture.
• Salaried individuals with a single employer whose entire tax liability has already been correctly deducted at source through TDS (Tax Deducted at Source) by their employer: May be exempt from filing a separate annual return, since the employer's TDS is treated as final settlement of their tax liability in many straightforward cases.

If your situation is anything beyond a simple single-employer salary — freelance income, rental income, foreign income, or capital gains from investments — it is safest to assume filing is required and confirm with a tax professional if unsure.

Documents Checklist Before Filing

• PAN certificate and login credentials for the IRD taxpayer portal
• Salary certificate / TDS certificate from employer(s)
• Bank statements for all relevant accounts for the fiscal year
• Records of any business income, expenses, and supporting invoices
• Rental income agreements and receipts, if applicable
• Investment and capital gains statements (shares, mutual funds, property, etc.)
• Previous year's filed return, for reference and continuity
• Details of advance tax installments already paid during the year

Step-by-Step Online Filing via IRD Taxpayer Portal

1. Log in to your account on the IRD's online taxpayer portal using your PAN and password.
2. Select the correct fiscal year and open the relevant income tax return form for your taxpayer category (individual or business).
3. Enter income details across all applicable heads — employment, business, rental, investment, and any other income.
4. Enter deductions and exemptions you are eligible for, supported by your documentation.
5. Reconcile advance tax already paid during the year against the total computed liability.
6. Review the computed tax — either payable or refundable — before final submission.
7. Submit the return electronically and retain the acknowledgment/receipt generated by the system.
8. Pay any remaining tax due promptly to avoid interest accruing after the deadline.

Penalties for Late Filing

Missing the Poush deadline is not simply a minor inconvenience — it comes with concrete financial cost. Late filing typically attracts interest of around 1.5% per month on any outstanding tax amount, calculated from the original due date until the tax is actually paid, in addition to a separate fixed late-filing fee charged simply for submitting the return after the deadline. These costs compound the longer the delay continues, so even if you cannot pay the full tax due immediately, filing the return itself on time is important to limit the additional late-filing fee, and you should discuss payment arrangements with the tax office as early as possible.

Advance Tax Installment Rules

Nepal's tax system requires many taxpayers — particularly businesses and self-employed individuals — to pay advance tax in installments throughout the fiscal year rather than as one lump sum at filing time. These installments are generally due at set points during the year and are based on estimated annual income or the previous year's tax liability. When the final return is filed, these advance payments are reconciled against the actual computed liability — resulting in either an additional payment due or a refund/credit if too much was paid in advance. Staying current with these installments throughout the year makes the year-end filing process far less financially stressful.

FAQ: Can I File a Revised Return After the Deadline?

Can I file a revised income tax return after the Poush deadline in Nepal?
In many cases, taxpayers are permitted to file a revised or amended return if they discover an error or omission after the original submission, subject to conditions set by the IRD and within a permitted time window. However, submitting a revised return after the deadline does not exempt the original late-filing penalty if the initial return itself was late — it only allows correction of the figures. If you realize a mistake after filing, it is best to address it with the tax office as soon as possible rather than waiting.

What happens if I have no tax due but still miss the filing deadline?
Even where no additional tax is due, a fixed late-filing fee can still apply simply for submitting the return after the deadline, since the filing obligation itself is separate from the payment obligation. It is important to file on time even in a nil or refund scenario.

Do advance tax installments apply to salaried employees?
Salaried employees whose tax is fully deducted at source by their employer through TDS generally do not need to separately pay advance tax installments, since the employer's periodic withholding already serves that function. Advance tax installment rules mainly affect businesses and individuals with non-salary income streams.