International taxation begins with two questions that decide whether Zimbabwe may tax an amount at all: where did the income arise (source)? and who earned it, and where do they belong (residence)? Zimbabwe operates a source-based income tax — under the Income Tax Act [Chapter 23:06], gross income is, in essence, amounts received by or accrued to a person from a source within, or deemed to be within, Zimbabwe — supplemented by deeming rules that bring certain amounts into the Zimbabwean net even when their physical source is abroad (for example, the deemed-source provisions and Section 12A on certain digital/satellite revenues). Residence then matters because several deeming rules and reliefs turn on whether a person is ordinarily resident in Zimbabwe. Master the source and residence rules and you can answer the threshold question of Zimbabwean taxing rights; misread them and every later computation is built on sand.

For cross-border situations, a second layer sits on top of the domestic rules: a Double Taxation Agreement (DTA), where one exists, allocates taxing rights between Zimbabwe and the other state and can override the domestic charge. Two DTA concepts are foundational and are the subject of this lesson alongside the domestic source/residence rules. First, treaty residence (Article 4) — a person resident in both states under their domestic laws is assigned to one state by the tie-breaker tests (for individuals: permanent home → centre of vital interests → habitual abode → nationality → mutual agreement; for others: place of effective management / competent-authority agreement). Second, the permanent establishment (Article 5) — the threshold a non-resident's presence must cross before the source state may tax its business profits (Article 7): a fixed place of business through which the business is wholly or partly carried on (with a list of inclusions such as a branch, office, factory, mine, and a building-site/project test), an agency PE (a dependent agent habitually concluding contracts), subject to exclusions for purely preparatory or auxiliary activities, and the rule that mere control of one company by another does not by itself create a PE.

The interaction is the heart of the lesson. Under domestic law Zimbabwe taxes income from a Zimbabwean source; under a DTA, a non-resident's business profits are taxable in Zimbabwe only if attributable to a Zimbabwean permanent establishment (Article 7 read with Article 5). So a South African company trading with Zimbabwe but without a Zimbabwean PE is generally not subject to Zimbabwean tax on those business profits, whereas the same company operating through a Zimbabwean branch/PE is taxable on the profits attributable to it. Other income types (dividends, interest, royalties) are dealt with by their own articles (covered in the DTAs & Treaty Relief and Withholding Taxes lessons), typically as reduced-rate source taxation. The worked examples in this lesson use the Zimbabwe–South Africa DTA (2016) (in the TaxTami Source Library) as the concrete treaty; other DTAs follow the same OECD-model structure but must be checked individually.

This lesson builds the concepts from first principles — what "source" means and how Zimbabwe's deeming rules extend it; what "ordinarily resident" means; how a DTA re-allocates rights and resolves dual residence; and how the PE threshold gates source-state taxation of business profits — with Zimbabwean scenarios and the relevant Act sections and treaty articles. It is the gateway to the rest of the International Tax & DTAs module and interlocks with Transfer Pricing (Article 9 associated enterprises) and Withholding Taxes (the dividends/interest/royalties articles). Rates and specific section numbers must be confirmed against the Act and the relevant DTA — .

First principles — source and residence as "taxing-right switches"

Every cross-border tax question starts by asking whether the taxing state has a connection to the income strong enough to justify taxing it. Two connections are universally used: source (the income arose here) and residence (the earner belongs here). Zimbabwe's income tax is primarily source-based: it taxes amounts from a source within Zimbabwe (and amounts deemed to be from a Zimbabwean source), whoever earns them — so a non-resident with Zimbabwean-source income is within the charge, while a resident's purely foreign-source income may fall outside it (subject to the deeming rules). Residence still matters because several deeming provisions and reliefs switch on ordinary residence. Getting these two switches right determines whether Zimbabwe has any claim to tax — the prerequisite to everything else.

Why a DTA changes the picture

Where Zimbabwe and another country both assert a taxing right over the same income (Zimbabwe by source, the other by residence), double taxation would result. A DTA prevents this by allocating the right between the two states and providing relief (exemption or credit). Crucially, a DTA can restrict what Zimbabwe's domestic law would otherwise tax — most importantly, by requiring a permanent establishment before Zimbabwe may tax a non-resident's business profits. So the practitioner must always run a two-step analysis: (1) does domestic law tax this amount (source/residence)? and (2) does a DTA modify or remove that right?

Where this sits

This is the first lesson of the International Tax & DTAs module. It establishes residence, source and PE — the concepts every later cross-border topic uses. It precedes DTAs & Treaty Relief (how the articles allocate rights and grant relief) and interlocks with the Transfer Pricing module (Article 9, associated enterprises, and the attribution of profits to a PE) and the Withholding Taxes module (the dividend/interest/royalty/fees articles, which are source taxes on specific income types). It assumes the domestic gross-income framework from the income-tax course and extends it across borders.

B.1 Domestic source and residence rules (Income Tax Act [Chapter 23:06])

• The source charge. Zimbabwean income tax is levied on amounts received by or accrued to a person from a source within Zimbabwe or deemed to be within Zimbabwe (the gross-income definition and the charging provisions). Source is, at common law, the originating cause of the income and where that cause is located (e.g. where services are rendered, where a trade is carried on, where capital is employed).
• Deemed-source provisions. The Act deems specified amounts to be from a Zimbabwean source even where the physical source is abroad — for example certain amounts connected with services or contracts, and amounts that accrue to persons ordinarily resident in Zimbabwe in defined circumstances (the deemed-source rules). Section 12A deems certain satellite-broadcasting and electronic-commerce revenues from Zimbabwean users to be from a Zimbabwean source (the digital-economy rules, taxed at the special 5% rate above the threshold — see the domestic Digital Economy lesson). **
• Ordinary residence. Several rules turn on whether a person is ordinarily resident in Zimbabwe (the place the person habitually resides and to which they would naturally return); the Act treats deceased, insolvent and trust estates as ordinarily resident by reference to the underlying person/trustee. Residence affects the reach of the deeming rules and access to certain reliefs.

B.2 The DTA overlay and its precedence

Where Zimbabwe has a DTA with the other state, the treaty allocates taxing rights and, to the extent it does so, governs. DTAs follow the OECD/UN model structure. The lesson uses the Zimbabwe–South Africa DTA (2016) (entered into force 1 December 2016) as the worked example; its taxes covered include Zimbabwe's income tax and the non-residents'/residents' withholding taxes. Each DTA must be read on its own terms — rates and some definitions differ by treaty.

B.3 Treaty residence and the tie-breaker (DTA Article 4)

Article 4 defines a "resident of a Contracting State" by reference to each state's domestic law (liability to tax by reason of domicile, residence, place of management, etc.). Where a person is resident in both states, the tie-breaker assigns a single residence: - Individuals (Art 4(2)): (a) the state where the individual has a permanent home available; if in both, (b) the state of the centre of vital interests (closer personal and economic relations); if undeterminable, (c) the state of habitual abode; if in both or neither, (d) the state of nationality; and if still unresolved, (e) by mutual agreement of the competent authorities. - Non-individuals (Art 4(3)): typically by place of effective management or, failing agreement, by competent-authority mutual agreement.

Treaty residence determines which state is the "residence state" (entitled to tax worldwide income, giving relief) and which is the "source state" (entitled to tax source income within treaty limits).

B.4 Permanent establishment (DTA Article 5)

A permanent establishment (PE) is the threshold a non-resident's presence must reach before the source state may tax its business profits: - Basic rule (Art 5(1)): a fixed place of business through which the business of an enterprise is wholly or partly carried on. - Inclusions (Art 5(2)): especially a place of management, branch, office, factory, workshop, and a mine/oil or gas well/quarry or other place of extraction of natural resources. - Deemed inclusions (Art 5(3)): e.g. a building site, construction, assembly or installation project (and sometimes the furnishing of services) where it lasts beyond a specified duration (a months threshold set in the treaty). ** - Agency PE: a person (other than an independent agent) acting on the enterprise's behalf who habitually concludes contracts (or plays the principal role leading to their conclusion) constitutes a PE; an independent agent acting in the ordinary course of its business does not. - Exclusions (Art 5): a fixed place used solely for preparatory or auxiliary activities — storage/display, purchasing or information-gathering, maintaining a stock for storage/display, etc. — is not a PE. - Control is not a PE (Art 5(8)): the mere fact that a company in one state controls or is controlled by a company in the other does not make either a PE of the other.

B.5 Business profits and attribution (DTA Article 7)

Under Article 7, the business profits of an enterprise of one state are taxable only in that state, unless the enterprise carries on business in the other state through a permanent establishment there — in which case the other (source) state may tax the profits attributable to that PE. Attribution treats the PE as if it were a separate and independent enterprise dealing at arm's length with the rest of the entity (the link to transfer-pricing principles). Other income categories (immovable property, dividends, interest, royalties, capital gains, employment, etc.) are governed by their own articles, not Article 7.

C.1 Source — the originating cause and where it lies

At common law (which Zimbabwean courts apply to the source concept), the source of income is its originating cause and the place where that cause is located. For different income types the originating cause differs: for services, the source is generally where the services are rendered; for a trade, where the trading activities are carried on; for the use of capital (interest), where the capital is employed/made available; for rent, where the property is situated; for royalties, where the underlying right is used. The practical method is to (1) identify the type of income, (2) find its originating cause, and (3) locate that cause geographically. If it is in Zimbabwe, the income has a Zimbabwean source.

C.2 Deemed source — extending the net

Pure common-law source would let obviously Zimbabwe-connected income escape (e.g. where a contract is performed partly abroad), so the Act deems specified amounts to be from a Zimbabwean source. These deeming rules override the common-law analysis for the amounts they cover. The modern example is Section 12A, deeming satellite-broadcasting and e-commerce revenues from Zimbabwean users to a Zimbabwean source (digital economy). Because deemed-source rules are specific and change, the practitioner must check the current Act rather than rely on the common-law source alone. **

C.3 Residence — ordinary residence and why it matters

A person is ordinarily resident where they habitually reside and to which they would naturally return — more than mere physical presence, less than domicile. Residence matters in Zimbabwe's source system because several deeming rules and reliefs switch on it (e.g. certain amounts deemed Zimbabwean-source if the recipient is ordinarily resident). For DTAs, domestic residence feeds treaty residence (Article 4), which then assigns a single residence via the tie-breaker where a person is resident in both states.

C.4 The two-step analysis (domestic then treaty)

The disciplined method for any cross-border amount: 1. Domestic step: does Zimbabwean law tax it? Identify source (common-law or deemed) and any residence-based deeming. If not taxable domestically, Zimbabwe has no claim and the DTA is moot for Zimbabwe. 2. Treaty step: if domestically taxable and a DTA applies, does the DTA allocate the right away from Zimbabwe or cap it? For business profits, Zimbabwe may tax a non-resident only if there is a Zimbabwean PE (Art 5 + Art 7). For dividends/interest/royalties, the relevant article usually reduces the source-state rate. Treaty residence (Art 4) decides which state is residence vs source.

The treaty can only restrict, not create or expand, a taxing right — it does not impose tax Zimbabwe's domestic law has not imposed.

C.5 The PE concept dissected

A PE requires, in the basic case, a place of business (premises, facilities, sometimes machinery), that is fixed (a distinct location with a degree of permanence), through which the enterprise's business is carried on (usually by personnel). The inclusions (branch, office, factory, mine, etc.) are examples that ordinarily meet the test; the project PE turns on duration (a site/installation persisting beyond the treaty's months threshold); the agency PE turns on a dependent agent habitually concluding contracts. The preparatory/auxiliary exclusions keep mere support activities (storage, display, purchasing, information-gathering) below the threshold. And control of one company by another is expressly not a PE (Art 5(8)) — a subsidiary is not automatically a PE of its parent (though the subsidiary's premises could be a PE of the parent on other facts).

C.6 Attribution of profits to a PE

If a PE exists, Article 7 taxes the source state on the profits attributable to it, computed as if the PE were a separate, independent enterprise dealing at arm's length with the rest of the entity — so internal dealings between head office and PE are priced on transfer-pricing principles, and the PE is allocated the functions, assets and risks it actually has. This is why PE analysis and transfer pricing are linked: establishing the PE opens the source-state charge; attribution then sizes it.

C.7 Why it matters commercially

Whether a foreign enterprise has a Zimbabwean PE is often the single most valuable international-tax question for an inbound investor: no PE → generally no Zimbabwean tax on business profits (only the specific-article source taxes like WHT on any dividends/interest/royalties); PE → Zimbabwean tax on the attributable profits, plus compliance (registration, returns). Structuring genuine business so that activities remain preparatory/auxiliary, or using an independent agent, can keep an enterprise below the PE threshold — but artificial PE-avoidance is increasingly countered (BEPS Action 7; the MLI — DTAs & Treaty Relief lesson).

Illustrative; uses the Zimbabwe–South Africa DTA structure. Corporate rate shown as 25% for arithmetic (**).

D.1 Source of services income — non-resident consultant

Facts. A South African engineer flies to Zimbabwe and performs a 3-week installation for a Zimbabwean client, fee US$60,000. - Domestic step: services rendered in Zimbabwe → Zimbabwean source → within the charge. - Treaty step: is the fee "business profits"? If the engineer (enterprise) has no Zimbabwean PE (a 3-week job, no fixed place beyond the threshold), Article 7 means Zimbabwe cannot tax the business profits — unless the work creates a PE (e.g. a project exceeding the Art 5(3) duration) or falls under another article. Result: likely not taxable in Zimbabwe on these facts (subject to any technical-fee WHT analysis — Withholding Taxes lesson). **

Teaching point. Zimbabwean source alone is not enough when a DTA applies — the PE gate must also be passed for business profits.

D.2 The same engineer, but a long project — PE created

Facts. The same SA enterprise runs a 14-month construction/installation project in Zimbabwe. - The project exceeds the Article 5(3) duration threshold → a Zimbabwean PE exists. - Article 7: Zimbabwe may tax the profits attributable to the PE. If attributable profit is US$1,000,000, Zimbabwean tax ≈ 1,000,000 × 25% = US$250,000 (plus registration and return obligations).

Teaching point. Duration turns an otherwise non-taxable presence into a taxable project PE.

D.3 Dual residence — the tie-breaker

Facts. An individual has a home and family in Zimbabwe but works for long spells in South Africa and is "resident" under both countries' domestic tests. - Article 4(2) tie-breaker: permanent home available → if in both, centre of vital interests. With family, home and main economic ties in Zimbabwe, the individual is treaty-resident in Zimbabwe. - Consequence: Zimbabwe is the residence state (taxes worldwide income, gives relief); South Africa taxes only SA-source income within treaty limits.

Teaching point. Domestic dual residence is resolved to one state by the ordered tie-breaker — permanent home, then centre of vital interests, then habitual abode, then nationality, then mutual agreement.

D.4 No PE despite a presence — preparatory/auxiliary

Facts. A foreign manufacturer keeps a warehouse in Harare solely to store and display its goods, and a small office that only gathers market information. No sales are concluded in Zimbabwe. - These are preparatory/auxiliary activities excluded from the PE definition (Art 5) → no PE → Zimbabwe cannot tax the business profits. - If the office staff began habitually concluding sales contracts, an agency PE would arise and the analysis flips.

Teaching point. A fixed place doing only preparatory/auxiliary work is not a PE; the line is crossed when core, contract-concluding functions occur.

D.5 Control is not a PE

Facts. A South African parent wholly owns a Zimbabwean subsidiary. ZIMRA argues the parent has a Zimbabwean PE merely through its control. - Article 5(8): control of one company by another does not, of itself, make either a PE of the other. The subsidiary is taxed as a Zimbabwean resident on its own profits; the parent has a PE only if it independently meets the Art 5 tests (e.g. its own fixed place or a dependent agent).

Teaching point. A subsidiary is not automatically a PE of its parent — separate Art 5 analysis is required.

Zimbabwean source jurisprudence draws on long-standing Southern African authority on the "originating cause" test for source — the approach Zimbabwean courts apply in locating the source of services, trade and capital income. The classic principle (from the line of source cases applied in this region) is that one identifies the real, originating cause of the income and where it is located, not merely where payment is made or a contract is signed. () On the DTA/PE side, Zimbabwean reported authority is limited and the analysis proceeds from the treaty text (Articles 4, 5, 7) read with the OECD/UN Model Commentaries as persuasive, non-binding interpretive aids. South African SCA decisions on source and on PE are persuasive given the shared legal heritage and the common treaty model, but must be labelled non-binding. Never invent a citation; where no on-point Zimbabwean case exists, reason from the Act and the treaty.

1. Stopping at domestic source. Where a DTA applies, Zimbabwean source is necessary but not sufficient for business profits — the PE gate (Art 5/7) must also be passed.
2. Confusing payment place with source. Source is the originating cause and its location, not where payment is made or the contract signed.
3. Ignoring deemed-source rules. Common-law source can be overridden by statutory deeming (e.g. Section 12A digital revenues); always check the Act.
4. Treating a subsidiary as a PE of its parent. Control is not a PE (Art 5(8)); analyse the parent's own presence.
5. Missing a project PE. A construction/installation/services project crossing the treaty duration threshold creates a PE even with no office.
6. Overlooking an agency PE. A dependent agent habitually concluding contracts creates a PE even without a fixed place.
7. Misapplying the tie-breaker order. Article 4(2) is a sequence (permanent home → centre of vital interests → habitual abode → nationality → mutual agreement); don't jump steps.
8. Assuming the treaty creates tax. A DTA can only restrict or allocate, never impose, a charge Zimbabwean law has not imposed.
9. Reading one DTA into another. Rates, thresholds and some definitions differ by treaty — read the specific DTA.
10. Forgetting PE attribution principles. Once a PE exists, profits are attributed on arm's length/separate-enterprise principles — a transfer-pricing exercise.

Work through the questions one at a time. Choose an answer and it is graded immediately, with an explanation and the provision it comes from. Your progress is saved, so you can stop and resume.

• Two threshold questions: source (did the income arise in Zimbabwe?) and residence (does the earner belong here?) decide whether Zimbabwe may tax at all.
• Zimbabwe is source-based: it taxes income from a source within, or deemed within, Zimbabwe (e.g. Section 12A digital revenues); source = the originating cause and where it lies.
• Two-step analysis: apply domestic law first, then any DTA — a treaty can restrict/allocate but never create a charge.
• Treaty residence (Art 4) resolves dual residence by the ordered tie-breaker (permanent home → centre of vital interests → habitual abode → nationality → mutual agreement).
• PE (Art 5) gates source taxation of business profits (Art 7): a fixed place (branch/office/factory/mine), a project beyond the duration threshold, or an agency PE (dependent agent concluding contracts); preparatory/auxiliary activities are excluded; control is not a PE (Art 5(8)).
• No PE → generally no Zimbabwean tax on a non-resident's business profits; PE → tax on attributable profits on separate-enterprise/arm's length principles (link to Transfer Pricing).
• Read each DTA individually — rates, thresholds and definitions differ; the Zimbabwe–South Africa DTA (2016) is the worked example here.
• Authority: the originating-cause source test (regional authority, verify the Zimbabwean case); OECD/UN Model Commentaries and SA decisions persuasive, non-binding.
• Continuity: next — DTAs & Treaty Relief (allocation and relief by income type, treaty WHT rates, MAP); interlocks with Transfer Pricing (Art 9) and Withholding Taxes (Arts 10–12).

Table 1 — Source of common income types (originating cause)

Table 2 — Article 4(2) individual tie-breaker (in order)

Table 3 — Permanent establishment: in vs out

Diagram — can Zimbabwe tax a non-resident's business profits?

flowchart TD
 A[Non-resident earns amount connected to Zimbabwe] --> B{Domestic: Zimbabwean source or deemed source?}
 B -->|No| Z[Not taxable in Zimbabwe]
 B -->|Yes| C{DTA in force?}
 C -->|No| D[Taxable under domestic source rules]
 C -->|Yes| E{Is it business profits?}
 E -->|Other income type| F[Apply the specific article - dividends, interest, royalties, etc.]
 E -->|Business profits| G{Zimbabwean permanent establishment? Art 5}
 G -->|No| H[Not taxable in Zimbabwe - Art 7]
 G -->|Yes| I[Tax profits attributable to the PE - Art 7, arm's length attribution]

Statutes & sections (Income Tax Act [Chapter 23:06]) - The gross-income/source charge — amounts from a source within or deemed within Zimbabwe; the common-law originating-cause source test. - Deemed-source provisions — including Section 12A (satellite-broadcasting and e-commerce revenues from Zimbabwean users deemed Zimbabwean-source). ** - Ordinary residence rules (incl. treatment of deceased/insolvent/trust estates). - Finance Act — rates applied to taxable Zimbabwean-source income / PE profits. **

International instruments - Zimbabwe–South Africa DTA (2016) (in force 1 December 2016; in the TaxTami Source Library) — Article 4 (resident; tie-breaker), Article 5 (permanent establishment), Article 7 (business profits; attribution). Other DTAs follow the OECD/UN model but must be read individually. ** - OECD/UN Model Tax Convention Commentaries — persuasive, non-binding interpretive aids.

Case law - Regional source ("originating cause") authority applied by Zimbabwean courts (verify the specific Zimbabwean decision); South African SCA source/PE decisions persuasive, non-binding.

ZIMRA guidance - ZIMRA guidance on source, residence, non-resident taxation and DTA application. **