Income Tax in Nepal: How the System Works (Residency, Heads, Deductions)

Income tax in Nepal is levied under the Income Tax Act, 2058 (2002 AD), a single consolidated statute that replaced the older 2031 Act and remains the governing law today. Each year the federal budget's Finance Act (Aarthik Ain) updates the tax slabs, thresholds and some concessions, so the Act supplies the permanent framework while the annual Finance Act supplies the current numbers. Reading the two together is essential: the slab you owe this year comes from the Finance Act, but the rules on residency, deductions and penalties come from the 2058 Act.

The tax is administered by the Inland Revenue Department (IRD), an agency under the Ministry of Finance, through Inland Revenue Offices and Large Taxpayers Office across the country. Every taxpayer, whether an individual, firm or company, must hold a Permanent Account Number (PAN) and most filing, payment and return submission is now done online through the IRD's taxpayer portal. Understanding how the system is structured, rather than just memorising rates, is what lets a taxpayer answer the practical question of how income tax works in Nepal.

Nepal's income tax operates on a self-assessment basis: taxpayers compute their own liability, pay it, and file a return, after which the IRD verifies and can reassess. This makes the concepts in this guide, residency, heads of income, deductions and deadlines, the building blocks every earner needs before turning to the calculators for the exact figure.

Residency, not citizenship, decides how much of your income Nepal taxes. Under Section 2 of the Income Tax Act, 2058, a natural person is a resident of Nepal in an income year if their normal (permanent) abode is in Nepal, or if they have stayed in Nepal for 183 days or more during a continuous period of 365 days, or if they are an employee of the Government of Nepal posted (deputed) abroad during that year. Companies are resident if incorporated in Nepal or if their effective management is in Nepal during the year.

The distinction matters because a resident person is taxed on worldwide income, income from employment, business or investment regardless of where its source lies, while a non-resident person is taxed only on income with a source in Nepal. A Nepali migrant worker who spends most of the year abroad may therefore be a non-resident for that year, and foreign salary earned abroad may fall outside Nepal's net, though remittance and other rules can still apply.

Non-resident individuals are generally taxed on Nepal-sourced income at a flat 25% rate rather than the progressive resident slabs, subject to any relief under a Double Taxation Avoidance Agreement (DTAA). Because the 183-day count and the 'normal abode' test can be finely balanced, anyone splitting time between Nepal and abroad should track their days carefully, resident vs non-resident status can change the tax bill substantially.

The Act classifies taxable income into heads so that each type is measured with its own rules. Under Section 5, the assessable income of a person in an income year is the sum of income from employment, income from business and income from investment; casual gains (such as certain windfalls) are also brought to tax. Only after each head is computed are they aggregated into total taxable income against which rates apply.

Employment income (Section 8) covers salary, wages, allowances, bonuses, commissions, the taxable value of perquisites and benefits, and payments on termination. For most salaried Nepalis this is the main or only head, and tax is deducted at source (TDS) by the employer each month, then reconciled through the annual return. Business income (Section 7) is the profit of a trade, profession or vocation after deducting allowable business expenses, depreciation and losses.

Investment income (Section 9) captures returns from holding assets, interest, dividends, rent, royalties, natural resource payments and gains on the disposal of non-business assets. Some investment income is taxed by final withholding, for example dividends and certain interest, meaning the TDS is the full and final tax and the amount need not be re-added to slab income. Because each head has different deduction and withholding rules, correctly assigning income to the right head is the first step in any accurate computation.

Deductions reduce taxable income before rates apply, while rebates and credits reduce the tax itself. The largest deduction for most employees is the approved retirement-fund contribution, contributions to a recognised provident fund (EPF), Citizen Investment Trust (CIT) or the Social Security Fund (SSF) are deductible up to the lower of one-third of assessable income or NPR 500,000 per year. Life insurance premiums are deductible up to NPR 40,000 a year, and health (medical) insurance premiums up to NPR 20,000, per current Finance Act limits.

For those contributing to the Social Security Fund, a larger effective limit applies because the deductible retirement ceiling is enhanced for SSF participants, and the first slab is taxed differently. A woman who files individually under her own PAN receives a 10% rebate on the tax computed on her employment income, the female (mahila) rebate, a deliberate concession to encourage women's formal earning and filing.

Several targeted credits and allowances also exist. A remote-area allowance of up to roughly NPR 50,000 a year is deductible for those posted in officially designated remote districts, with the exact amount tiered by area category. A medical tax credit under Section 51 allows the lower of 15% of approved medical expenses or NPR 750 to be set against tax, with unused amounts carried forward. Donations to approved tax-exempt organisations are deductible under Section 12 up to the lowest of the actual donation, 5% of adjusted taxable income, or NPR 100,000, and pension income and foreign-employment income enjoy specific reductions.

Nepal taxes resident individuals on a progressive slab basis, so higher bands of income are taxed at higher marginal rates while lower bands stay lightly taxed. For FY 2081/82 (2024/25 AD), an unmarried individual pays 1% on the first NPR 500,000 (a social-security levy rather than income tax proper), 10% on the next NPR 200,000, 20% on the next NPR 300,000, 30% on the next NPR 1,000,000, 36% on income from NPR 2,000,000 to NPR 5,000,000, and 39% above NPR 5,000,000.

A married couple electing to be assessed jointly gets slightly wider lower bands: 1% on the first NPR 600,000, then 10% on the next NPR 200,000, 20% on the next NPR 300,000, and the same 30/36/39% steps above. The 1% band does not apply to proprietorship (sole-trader) income, pension income, or income covered by a contribution-based pension fund, in those cases the first band is effectively exempt or taxed differently. Because the Finance Act can adjust these thresholds each year, always confirm the current fiscal year's numbers before computing.

These slabs are the reason the same gross salary produces very different effective tax rates depending on marital status, retirement contributions and eligible rebates. Rather than compute the bands by hand, most people use a calculator: for salary earners see the AmarNepal salary tax calculator, and for other income the income tax calculator, both of which apply the current slabs, deductions and rebates automatically.

Nepal's income (assessment) year runs on the Bikram Sambat calendar from 1 Shrawan to the end of Ashadh, roughly mid-July to mid-July in the Gregorian calendar, so FY 2081/82 corresponds broadly to 2024/25 AD. Salaried taxpayers have tax withheld monthly by their employer (TDS), while those with business or investment income must estimate their annual tax and pay it in advance instalments under Section 94.

The advance-tax instalments are due in three tranches: at least 40% of estimated tax by the end of Poush (mid-January), 70% by the end of Chaitra (mid-April) and 100% by the end of Ashadh (mid-July). Paying too little at each stage attracts interest under Section 118, so estimates should be realistic. TDS and advance tax paid during the year are credited against the final liability computed in the return.

Under Section 96 every taxpayer must file an income return within three months of the income year's end, i.e. by the end of Ashwin (mid-October); the IRD routinely grants a standard extension to the end of Poush (mid-January) on application. Salaried individuals whose only income is employment income already subject to correct TDS, and who fall under a single employer, are often relieved of filing a full return, but keeping records is still advisable.

The Act backs its deadlines with fees and interest. Under Section 117, failing to file an income return or maintain required documents attracts a fee of the higher of 0.1% per annum of assessable income (charged monthly) or NPR 100 per month for individuals; for entities and non-filers of withholding returns the equivalent charge is 1.5% per annum of the relevant amount, computed for each month and part-month of default. These fees are separate from, and additional to, the tax itself.

Section 118 charges interest where a person paying by instalments underpays the estimated tax relative to the instalment thresholds, and Section 119 charges interest, at the normal rate specified by the IRD (commonly 15% per annum), for each month and part-month that tax remains unpaid past its due date. Deliberate evasion, false statements or obstruction can trigger heavier penalties and, in serious cases, prosecution under the Act's offence provisions (Sections 120 onward).

Because interest and fees compound month by month, the cost of ignoring a deadline grows quickly. The practical takeaways are simple: register for a PAN, deduct or pay TDS and advance tax on time, keep supporting documents for insurance, retirement and donations you deduct, and file the return within the window. Doing so keeps a taxpayer on the right side of a self-assessment system that expects accuracy up front and penalises correction after the fact.