Income Tax Law in Nepal 2026: Scope, Assessment & Filing

Most Nepali businesses, salaried staff, and NRN investors only encounter the Income Tax Act 2058 the moment a notice from the Inland Revenue Department lands — by then the room to argue residency, source allocation, deduction eligibility, or assessment-time limits has already narrowed. The Act is the spine of Nepal's direct-tax system; it sets out who is taxed, on what income, under what definitions, with what deductions, through what procedure, and through which appellate route. Reading the Act once at the start of a business or career — at least the chapters that bear on the typical taxpayer's position — is the single highest-return tax investment most people never make. See Alpine's tax-law practice area for related matters.

This guide is the 2026 (2083 BS) practitioner's law-explainer on the Income Tax Act 2058 in Nepal — the enactment and 28-chapter structure, Schedules 1 and 2, the charging section, the residency test under Section 2(ka), the income heads under Section 5, the deduction framework under Sections 17 to 25, transfer pricing under Sections 33 and 34, the withholding-tax regime under Chapter 17, the return-filing and self-assessment under Sections 95 to 100, the assessment-amendment power under Section 105, the administrative review under Section 115 and Revenue Tribunal appeal under Section 116, the interest under Section 119 and penalty under Section 117, and the interaction with the Finance Act 2082 and the Income Tax Rules 2059. For the FY 2082/83 slab rates and corporate-sector rates see our companion income tax rate in Nepal guide; for PAN registration see our PAN card guide.

What is the Income Tax Act 2058 of Nepal?

The Income Tax Act 2058 (2002) is Nepal's principal direct-tax statute — the consolidating Act that replaced the Income Tax Act 2031 and brought the country's income-tax framework onto a modern self-assessment basis. It was enacted on 19 Chaitra 2058 BS (1 April 2002 AD) and became operative from the next fiscal year, with every subsequent Finance Act layering annual amendments on the rates and operative provisions while the parent Act has remained substantially stable. The Act runs across 28 chapters, supported by Schedule 1 (the rate schedule, updated annually) and Schedule 2 (the depreciation rates by asset class). The procedural detail is provided by the Income Tax Rules 2059 (2002), and the operational layer is added by the Inland Revenue Department through circulars, public rulings, and assessment practice.

The Act is administered by the Inland Revenue Department (IRD) under the Ministry of Finance, with the IRD organised into a central office, large-taxpayer units, and field offices across the country. The IRD's online portal at taxpayerportal.ird.gov.np is the operational front door — return filing, payment, refund, communication, and most assessment-stage interactions happen on that platform. The Act's appellate framework reaches outside IRD: the Revenue Tribunal established under the Revenue Tribunal Act 2031 hears appeals against IRD assessment and recovery orders, and further appeal lies to the Supreme Court of Nepal on points of law. The combination — Act, Rules, Finance Act, IRD circulars, Tribunal and Court rulings — is what working tax practitioners read together.

What is the structure of the Income Tax Act 2058?

The 28 chapters of the Act are organised functionally. Chapters 1 and 2 set the preliminary scaffolding — title, commencement, and the definitions in Section 2 including the Section 2(ka) residency definition. Chapter 3 (Sections 3 and 4) is the charging machinery — Section 3 imposes the tax, and Section 4 calibrates the scope by residency status. Chapters 4 to 6 (Sections 5 to 16) cover the computation of income — heads of income, sources, exemptions, deductions allowed at the income-source level, and concessions for special industries and special-area units.

Chapters 7 and 8 (Sections 17 to 25) set out the deduction framework — what costs are deductible against business and investment income, what is specifically not deductible, and the special rules for interest, depreciation, repairs, contributions, bad debts, research expenditure, and pollution-control expenditure. Chapters 9 to 14 (Sections 26 to 45) handle special situations — partnerships and joint ventures, trusts and estates, transfer pricing and arm's-length pricing for related-party transactions, anti-avoidance rules including general anti-avoidance, and special rules for banking and insurance. Chapter 15 (Sections 67 to 73) deals with international tax — foreign tax credit, source rules, allocation of expenses across jurisdictions, and the interface with Double Taxation Avoidance Agreements.

Chapter 17 (Sections 87 to 95) is the withholding-tax regime — the operational backbone of Nepal's collection system, specifying the TDS catalogue for each category of payment, the final-vs-non-final distinction, the rules for payments to non-residents, and the withholding agent's obligations. Chapters 18 to 20 (Sections 95 to 110) cover returns, payment, and assessment — the annual return under Section 95, self-assessment under Section 96, installment payment under Section 100, deemed assessment under Section 102, and amendment of assessment under Section 105. Chapters 21 and 22 (Sections 115 and 116) provide the dispute-resolution route — administrative review and Revenue Tribunal appeal. Chapters 23 to 28 (Sections 117 to 144) carry interest, penalty, offences, recovery, and miscellaneous administrative provisions.

Who is a Nepal tax resident under Section 2(ka)?

The residency test is the gateway provision that decides whether the worldwide-income rule or the Nepal-source-only rule applies. Section 2(ka) provides that an individual is a resident of Nepal for an income year if the individual is physically present in Nepal for 183 days or more in any continuous 365-day window that includes a day in the income year. The test is mechanical — the count is of physical days, treating any part of a day as a full day, and any 365-day window that catches the income year is eligible (so an individual present in Nepal from October to June can be resident for that fiscal year even if absent the rest of the year). An employee on overseas posting from a Nepal employer is treated as resident if the post is for less than 365 days; a posting of 365 days or more typically takes the employee out of residency for the duration.

For an entity, the residency test under Section 2(ka) is the place-of-incorporation test combined with the central-management-and-control test. A company incorporated under the Companies Act 2063 in Nepal is a Nepal resident. A foreign-incorporated entity may also be a Nepal resident if its central management is exercised in Nepal — typically established by where the board meets and decides, where the senior executives sit, and where the strategic decisions originate. The consequence of residency is the worldwide-income rule under Section 3 read with Section 4: a resident is taxable on worldwide income, while a non-resident is taxable only on Nepal-source income. The source rules under Section 67 then determine what is and is not Nepal-source.

What are the heads of income under Section 5?

Section 5 catalogues the four heads of income that are aggregated into assessable income. Employment income covers salary, wages, allowances, bonuses, benefits in kind (housing, vehicle, education), and severance payments arising from an employer-employee relationship — Section 8 provides the detail of inclusions and the exemptions for certain reimbursements and statutory benefits. Business income covers profits from any business carried on by the taxpayer, including manufacturing, trading, service-rendering, and professional practice — Section 7 provides the inclusions and the timing rules. Investment income covers dividends, interest, rent, royalty, and capital gains arising from holding assets for investment rather than for trade — Section 9 sets the inclusions. Casual income is the residual category catching winnings, gambling proceeds, and other non-recurring receipts.

The heads matter because the deduction framework, the timing rules, and the withholding-tax rates differ across heads. An expense deductible against business income may not be deductible against investment income; a payment from employment may be taxed on receipt while business income is taxed on accrual; a withholding rate that applies to dividend does not apply to business profit. Mis-classification across heads is a frequent source of assessment disputes — for example, whether a periodic receipt from a property is rental investment income or business income from a leasing business; whether a payment from a former employer is employment income or compensation income; whether a recurring receipt from a freelance practice is business income or employment-like.

What deductions does the Act allow under Sections 17 to 25?

Sections 17 to 25 set the deduction framework for business and investment income. The general rule under Section 13 read with Section 18 is that expenses are deductible if they are wholly and exclusively incurred for the production of taxable income and are not specifically disallowed. Personal expenses, capital expenditures (deducted instead through depreciation), and expenses for the production of exempt income are not deductible. Section 18 covers interest deductibility — interest on debt incurred for business purposes is deductible, subject to thin-capitalisation rules limiting interest deduction on related-party borrowing.

Section 19 governs depreciation under Schedule 2 — assets are grouped into classes (buildings, plant and machinery, vehicles, computers, intangibles) with prescribed annual rates; the diminishing-balance method is the default. Section 20 covers repair and improvement — distinguishing currently-deductible repair from capitalisable improvement that flows through depreciation. Section 21 handles approved contributions to retirement funds. Section 22 deals with bad debts — debts proven irrecoverable and written off in the accounts are deductible if previously included in income. Section 23 covers approved donations to listed institutions, capped at a percentage of taxable income. Section 24 handles research and development; Section 25 pollution-control expenditure — both with accelerated benefits to encourage spending.

How do Sections 33 and 34 govern transfer pricing?

The transfer-pricing framework lives in Sections 33 and 34. Where two persons are related (as defined in Section 2) and they transact at prices that do not reflect what unrelated parties dealing at arm's length would have agreed, the IRD has the power under Section 33 to recompute the income of both parties on the arm's-length basis. The adjustment can be made on related-party sales, related-party services, related-party royalties and license fees, related-party financing arrangements, and related-party transfer of intangibles. Section 34 extends the principle to income-allocation between branches and head offices of the same enterprise.

The standard defence at assessment is contemporaneous transfer-pricing documentation — a study showing the methodology used (comparable uncontrolled price, cost plus, resale price, transactional net margin, or profit split), the benchmarking against comparables, and the supporting data. Multinational groups operating in Nepal — Nepal subsidiaries of foreign parents, foreign subsidiaries of Nepal parents, regional service-centre arrangements — face transfer-pricing scrutiny on inbound and outbound related-party flows. The recurring areas are management-fee charges from parent to subsidiary, intra-group royalty payments, related-party financing at non-market rates, and intra-group cost-allocation arrangements. The defence requires file-ready documentation; retrospective justification at assessment is rarely effective.

How does the withholding-tax regime work under Chapter 17?

Chapter 17 (Sections 87 to 95) sets the withholding-tax regime that operates as the principal tax-collection mechanism for non-employment income. The withholding agent — typically a payer that is a registered entity or government body — deducts tax at source from the payment at the rate specified in Schedule 1 for the category of payment, and remits the tax to IRD within the prescribed period. The agent issues a TDS certificate to the recipient evidencing the withholding. The recipient either treats the withholding as a credit (non-final withholding) or as the final tax obligation (final withholding) depending on the category and whether the recipient is a resident or non-resident.

The catalogue includes: Section 87 — payments to employees (withholding by employer on monthly payroll basis); Section 88 — dividends paid by resident companies; Section 89 — payments to non-residents; Section 90 — investment returns including interest; Section 91 — rent and royalty payments; Section 92 — gains on disposal of certain assets; Section 93 — service-fee payments to contractors; Section 94 — final-withholding categories (dividend, interest to individuals, certain investment returns); Section 95 — agent's obligations including remittance and certificate issuance. Failure of the withholding agent to deduct and remit triggers personal liability — the agent is liable to the same extent as the underlying recipient was, plus interest and penalty.

How does return-filing and self-assessment work under Sections 95 to 100?

The Act runs on self-assessment. Under Section 95, every person with assessable income files an annual return for the income year within the period prescribed by the Income Tax Rules — by default the return is due within three months of the end of the income year, which translates to Ashoj end of the following calendar year for Nepal's Shrawan-to-Ashad fiscal cycle. The return discloses income by head, claims deductions and credits, and computes the tax payable. Section 96 imposes the self-assessment obligation — the taxpayer is required to compute the tax correctly, include it in the return, and pay it before the return is filed. The amount declared and paid is the self-assessment.

Section 100 imposes installment-payment obligations for taxpayers with substantial business income or investment income — payments of estimated tax at Poush end, Chaitra end, and Ashad end of the income year, based on the prior year's tax with adjustments for known changes. Failure to pay the installments on time attracts interest under Section 119 even if the final assessed tax matches the installments paid. For corporate taxpayers and large individual taxpayers, the installment schedule is the operational rhythm of the year — most of the tax is paid in installments, and the annual return reconciles to a final position.

How does the IRD assessment process work under Sections 101 to 110?

After the self-assessment return is filed, IRD has the power under Section 101 to review the self-assessment — within the standard four-year window, longer for fraud, concealment, or substantial under-declaration. The review may be desk-based (cross-checking declared income against third-party data, TDS records, bank reports, VAT returns, customs records) or field-based (audit of books, premises inspection, examination of records). Where the review identifies under-declaration, IRD issues an assessment notice under Section 105 stating the grounds, the proposed additions, the proposed tax, the interest and penalty, and the response window — typically 15 to 30 days for the taxpayer to file a written response.

The taxpayer's response is considered, and a final assessment order is issued. Section 102 provides for deemed assessment in narrow situations — typically where the taxpayer has failed to file a return at all and IRD computes income on the best-judgment basis. Section 105 also allows amendment of an earlier assessment within the statutory window. The final assessment crystallises the tax payable; from that date, the recovery machinery under Section 120 can be invoked — bank account attachment, garnishee orders on third parties, property attachment, and ultimately distress sale. The taxpayer's countermove is the dispute-resolution path under Sections 115 and 116.

How does administrative review and Revenue Tribunal appeal work?

Section 115 provides the first-level dispute remedy — administrative review filed with the IRD by an officer senior to the original assessing officer. The review is filed within 30 days of receipt of the assessment order (with extension on cause shown), the taxpayer's grounds are placed on record, the original assessment is reviewed on the merits, and an order is issued either confirming, varying, or setting aside the assessment. Administrative review is the chance to argue points that may have been inadequately considered at the original assessment stage, to introduce additional documentation, and to seek penalty waiver where the under-declaration was bona fide.

If the administrative review is adverse, Section 116 provides the appeal to the Revenue Tribunal — the specialised tribunal established under the Revenue Tribunal Act 2031. The appeal is filed within 35 days of the administrative review order, accompanied by the prescribed court fees and a deposit of a percentage of the disputed tax to stay recovery under Section 120. The Tribunal hears the matter on the merits, the taxpayer and IRD both present evidence and argument, and the Tribunal issues a reasoned order. Further appeal lies to the Supreme Court on substantial questions of law — not on findings of fact alone — within the period prescribed by the rules. The Tribunal's expertise in tax matters typically produces more nuanced outcomes than ordinary civil courts, and the route is the standard path for serious tax disputes.

What are the interest and penalty provisions under Sections 117 to 124?

The Act distinguishes between interest (compensation for late payment) and penalty (sanction for behaviour). Section 119 imposes interest on unpaid tax — calculated at the prescribed rate (typically 15% per annum) from the original due date until payment. The interest is automatic on any late payment and is not subject to waiver in the ordinary course. Section 117 imposes a late-filing penalty — fixed at category-based rates depending on the type of taxpayer and the length of delay; the penalty is in addition to the late-payment interest.

Section 122 imposes a penalty for false or misleading statements in the return — typically up to 100% of the shortfall tax — calibrated to the degree of culpability (negligent error attracts a lower percentage than wilful misstatement). Section 123 covers obstruction penalty for refusing to cooperate with IRD inquiries. Section 124 is the offences-and-prosecution section — tax evasion involving wilful concealment, fraudulent documentation, or organised schemes can attract criminal prosecution with imprisonment provisions and a fine, in addition to the civil tax-and-penalty liability. Prosecution under Section 124 is rare but is the IRD's escalation route in cases of serious misconduct.

How does the Finance Act interact with the parent Act?

The Finance Act of each fiscal year is enacted alongside the Budget Speech (typically in Jestha of the new year) and serves two functions. First, it updates Schedule 1 — the rate schedule — for the new fiscal year: individual slabs, corporate sector rates, withholding rates, capital gains rates, and concessional rates are all set or re-set through the Finance Act. Second, it adds new operative provisions to the parent Act — new exemptions, new concessions, new rules on specific transactions, new penalty provisions — that become part of the Income Tax Act for the year and beyond unless amended further. For practitioners, the working reference is always "the Act as amended by the Finance Act of the current year".

The Finance Act 2082 (for FY 2082/83) retained the slab structure introduced in the previous fiscal year — the 1% SST first band, the progressive 10/20/30/36 structure — and adjusted certain corporate sector rates and concessions. The annual Finance Act also typically refines the withholding-tax catalogue, adjusts donation-deduction caps, updates retirement-fund contribution limits, and may introduce new sectoral concessions or remove obsolete ones. The Income Tax Rules 2059, supplemented by occasional IRD circulars, provide the procedural detail for the new provisions. Reading the parent Act in isolation gives a partial picture; the working law is the Act as amended and supplemented.

How does the Act treat international income and DTAA relief?

Chapter 15 (Sections 67 to 73) carries the international-tax framework. Section 67 sets the source rules — when income is Nepal-source and when it is foreign-source — for each category of income (business profits, services, royalties, interest, dividends, capital gains, rents). The source determination matters because non-residents are taxed only on Nepal-source income, and residents can claim foreign-tax credit only on foreign-source income that has been taxed abroad. Section 71 provides the foreign-tax-credit mechanism — a resident is allowed credit for foreign tax paid on foreign-source income up to the Nepal tax attributable to that income, computed on a per-country basis.

The Act recognises and incorporates Double Taxation Avoidance Agreements (DTAAs) that Nepal has signed with treaty partners — India, the UK, Norway, Korea, China, Thailand, Sri Lanka, Pakistan, Mauritius, Austria, and others. Where a DTAA applies, its provisions on allocation of taxing rights, reduced rates on cross-border dividend, interest and royalty payments, permanent-establishment thresholds for business profits, and tie-breaker rules for dual-residence cases prevail to the extent more favourable to the taxpayer. Claiming DTAA relief requires a tax-residency certificate from the treaty partner state and reference to the relevant Article of the DTAA on the return. For multinational groups and NRN investors, DTAA mapping is the first step in any cross-border tax position — done correctly, it can materially reduce the combined effective rate.

What planning, compliance, and dispute lessons should taxpayers take from the Act?

From practitioner experience, the most consequential lessons are: residency status is decided by 365-day windows, not fiscal years — keep contemporaneous travel records and don't assume calendar-year intuition; self-assessment is binding but reviewable for four years — file accurately even when IRD is unlikely to review; deduction documentation must be contemporaneous — retrospective vouchering at assessment rarely persuades; withholding-tax compliance is the agent's personal liability — pay attention to TDS schedules; installment payments matter even if the annual reconciliation matches — interest accrues on missed installments; transfer-pricing documentation must be file-ready — assessment is not the time to commission the study; and DTAA relief requires evidence (residency certificate, treaty article) — not just assertion.

On dispute, the lesson is to use the administrative-review stage seriously — it is the chance to file a complete record before the matter reaches the Tribunal, and orders favourable at administrative review save the time and deposit of a Tribunal appeal. Where the Tribunal is the right forum, the appeal is filed within 35 days and the case is presented on the merits with full evidence. The Tribunal's role is substantive review, not formality, and the quality of the appeal record largely determines the outcome.

How does Alpine Law Associates handle Income Tax Act 2058 matters?

Alpine Law Associates advises individuals, NRN investors, and corporates across the full lifecycle of the Income Tax Act 2058 — pre-year structuring (residency planning, source-allocation, DTAA mapping, special-industry classification, capital-allowance elections), in-year compliance (TDS-schedule mapping, installment computation, contemporaneous documentation, transfer-pricing files), return preparation and review (annual return under Section 95, foreign-tax-credit claim, DTAA-relief documentation), and dispute representation (assessment-stage response under Section 105, administrative review under Section 115, Revenue Tribunal appeal under Section 116, Supreme Court appeal on points of law). For NRN clients we map worldwide-income exposure and DTAA position; for multinational groups we structure transfer pricing on a file-ready basis; for businesses we plan capital allowance and sector concessions. Speak with our tax lawyers today →