Time of Supply Rules

A Lesson Context

Defining “Time of Supply”: In VAT, the Time of Supply is the moment a transaction is legally deemed to occur for tax purposes. This “tax point” determines when VAT must be accounted for and paid to the authorities. In Zimbabwe’s VAT system, understanding the time of supply is critical: it dictates the period in which Output Tax (VAT on sales) is declared to ZIMRA and when the buyer can claim Input Tax (VAT on purchases)[1][2]. Knowing the correct tax point ensures that VAT is reported in the proper tax period, preventing late payment or filing. It also starts the clock on compliance obligations like the 30-day deadline to issue a fiscal tax invoice after a supply[3].

Importance in the Zimbabwean Context: Zimbabwe’s VAT Act [Chapter 23:12] sets specific rules for time of supply, often referred to as the “tax point”[4]. This concept underpins VAT’s consistency as a revenue source[5]. For professionals and businesses, mastery of time of supply rules is not just academic – it is vital for cash flow management and avoiding penalties. For instance, receiving a large deposit in advance means VAT on that amount is due immediately, affecting cash flow if not anticipated. Misjudging the timing can lead to disputes with the tax authority (ZIMRA) and exposure to back-taxes, penalties, and interest[6][7]. Thus, this lesson builds from first principles (what triggers a VAT liability and when) and ties into prior chapters on what constitutes a “supply” and how VAT is accounted for. By the end, readers should see how time of supply connects to invoicing, VAT returns, and overall compliance, reinforcing concepts from earlier lessons (like VAT registration and the obligation to fiscalize sales).

B Legislative Framework

Primary Law – VAT Act [Chapter 23:12]: Zimbabwe’s VAT Act is the authoritative source on time-of-supply rules. Section 8 of the VAT Act is devoted to Time of Supply, detailing the general rule and special cases. It establishes that, unless otherwise specified, a supply is deemed to take place at the earlier of issuing an invoice or receiving payment[8]. In other words, whenever an invoice for a sale is issued or any part of the payment is received – whichever happens first – that moment fixes the VAT tax point. This general rule is designed to prevent indefinite delays in VAT payment by simply not invoicing or not paying. The Act then modifies this rule for particular situations:

Connected Persons: Section 8(2)(a) tightens the rule for related parties (e.g. inter-company transactions). If a supply is between connected persons, the time of supply is when the goods are removed (if goods are to be delivered) or made available (if no physical removal), or when the service is performed – if these events occur before any invoice or payment[9]. This prevents related businesses from delaying VAT by holding off invoicing each other. (A proviso in the law says if they do invoice or pay by the time the VAT return for that period is due, the special trigger doesn’t apply[10].)
Cooling-off Sales: Section 8(2)(b) ties into door-to-door credit sales that have a contractual “cooling-off” period (referenced by Section 7(3) of the Act). In such cases, where the customer has a right to cancel, the time of supply is deferred until the cooling-off period lapses without cancellation[11] (essentially, the day after the last day the buyer could cancel).
Lay-by Sales: Special rules cover lay-by agreements, where a buyer pays a deposit (and possibly installments) for goods that the seller will deliver only once a certain amount or the full price is paid. Under Section 7(4)(a) of the Act, a lay-by sale “shall not be deemed to be a supply” until the goods are actually delivered to the purchaser[12]. Thus, even though the seller receives deposits, no VAT is triggered at each payment – VAT is only triggered when handing over the goods. If the lay-by is cancelled or terminates and the seller keeps the deposit or any amount paid, the law deems the seller to have made a supply of services at that cancellation time, equal to the forfeited amount[13].
Instalment Credit Agreements: For sales on credit where the buyer takes the goods immediately and pays over time (e.g. hire purchase of a vehicle or machinery), Section 8(3)(c) provides that the time of supply is when the goods are delivered or when any payment is received – whichever occurs first[14]. In effect, delivery usually happens up front, so that becomes the tax point. The full value of the sale is subject to VAT at that point (even if most payments will only be received later).
Periodic and Continuous Supplies: Section 8(3)(a) and (b) address situations of ongoing or progressive supplies. If goods or services are supplied continuously under an agreement that provides for periodic payments (for example, a rental agreement for equipment, or a service contract with monthly billing), each period’s supply is deemed to occur when the payment for that period becomes due or is received, whichever comes first[15]. Similarly, for progressive work like a construction project with milestone payments, each milestone is treated as a separate supply occurring at the earliest of that payment becoming due, payment being received, or an invoice for that milestone being issued[16].
Fixed Property: Special treatment is given to sales of land and buildings (immovable property). Under Section 8(3)(d) and (e), the time of supply for fixed property is the earlier of the date of registration of transfer in the Deeds Office or the date any payment towards the purchase price is made[17]. If neither transfer nor payment has occurred by the time the sale agreement is signed, then the date of the sale agreement becomes the tax point[18].
Fringe Benefits: The VAT Act even covers deemed supplies in the context of employee benefits. If a registered operator (employer) gives an employee a fringe benefit that is a taxable good or service (for example, free private use of a company car or subsidized housing), the employer is deemed to supply that service and must account for output VAT. The timing is set in Section 8(7): if the benefit’s value is included in the employee’s monthly remuneration for income tax, each month-end is a supply (so VAT is accounted monthly)[19]. If the benefit’s value is not taxed monthly (like a company car which might be taxed annually under the Income Tax Act schedules), the time of supply is the last day of the year of assessment[20].
Deemed Supplies and Repossessions: The Act contains other timing rules for less common scenarios. For example, if a registered operator ceases to be registered, they are deemed to supply any business assets on hand immediately before de-registration (output VAT is due on those assets as if sold) – time of supply being that moment of de-registration (Section 7(2) deeming, tied to Section 8(5))[21]. If goods sold on credit are repossessed from a defaulting customer, the law deems the original buyer to make a supply of those goods back to the seller (often a creditor) on the repossession date (Section 7(9) and Section 8(8)).

Imported Services: In addition to the VAT Act’s Section 8 (which mainly deals with local transactions), Section 13 of the VAT Act and related regulations cover imported services. An “imported service” is when a Zimbabwean resident or business buys services from a non-resident supplier (and those services are for private or exempt use, not for making taxable supplies)[22][23]. The VAT Act makes the recipient of such services liable for the VAT (a reverse charge mechanism). The time of supply for imported services is defined as the earliest of when an invoice is issued by the foreign supplier (or by the Zimbabwean recipient, if they prepare one) or when payment for the service is made or when the service is performed[24][23]. The VAT Regulations stipulate compliance for imported services: the Zimbabwean recipient must declare and pay the VAT on an imported service by the 15th of the month following the month in which the supply occurred[24].

Accounting Basis – Invoice vs Cash: Under Section 14 of the VAT Act, Zimbabwe’s default accounting basis for VAT is the invoice (accrual) basis[25]. This means all registered operators must account for VAT in the period a supply occurs (per the time of supply rules above), regardless of when cash is received or paid. However, the law permits an alternative payments (cash) basis in limited cases. Specifically, only certain categories of taxpayers – namely approved public authorities, local authorities, and non-profit associations – may apply to the Commissioner to adopt the cash basis[26]. If approved, such an entity would account for output tax only to the extent that payment is actually received, and claim input tax only when it pays its suppliers[26].

Recent Legislative Changes (2025–2026): The Finance Act No. 7 of 2025, which enacted the 2026 National Budget measures, increased the standard VAT rate from 15% to 15.5% effective 1 January 2026[27]. The law provides that the VAT rate applicable is based on the time of supply. Therefore, any supply deemed to take place on or after 1 Jan 2026 is subject to 15.5%, whereas before that date it’s 15%. ZIMRA issued Public Notice 07 of 2026 to guide businesses on this transition: for example, Category A (bi-monthly) VAT filers covering Dec 2025–Jan 2026 were instructed on how to split or apportion sales in the return so that December’s sales are taxed at 15% and January’s at 15.5%[28][29].

C Detailed Conceptual Explanation

General Rule – The Earliest of Invoice or Payment

The fundamental principle in Zimbabwean VAT is that a taxable supply occurs at the earliest moment that either an invoice is issued or payment is received[8]. This is often paraphrased as “VAT is due at the earlier of invoice or payment.” The reasoning is straightforward: VAT is a transaction tax, so once a transaction is evidenced by an invoice or by a flow of funds, the tax should be recognized. For example, if a hardware supplier in Harare delivers goods on credit on 5 March and issues the invoice on 10 March, but the client pays on 20 March, the time of supply is 10 March (invoice date). VAT must be included in the March VAT return. Conversely, if the client had paid a deposit on 1 March before any invoice, that payment on 1 March becomes the time of supply[37]. At that point, the supplier has received part of the consideration, so VAT on that amount can’t be delayed – it’s due in the period of receipt. This rule prevents tax avoidance through delayed billing: without it, businesses could provide goods/services and simply not invoice for months to defer VAT. Zimbabwe’s law mirrors practices in many VAT regimes: it creates a “tax point” as soon as there’s a document or money confirming the deal.

It’s important to note what counts as an “invoice”. The VAT Act defines an invoice as any document notifying an obligation to pay[38]. A Fiscal Tax Invoice is the specific VAT-compliant invoice registered operators must issue (with all required details like VAT number, date, amounts, etc.). If a buyer issues a document (like a self-billed invoice) or a debit note that serves as an invoice, that too can trigger the time of supply[39][40]. In practice, most businesses operate on invoice basis, so they will record output VAT in the period the invoice is dated (unless prepayment came earlier). The rule also captures part-payments: even a deposit or milestone payment creates a tax point for that portion of the supply[37]. The supplier must account for VAT on the amount received, while the balance of the supply will be taxed when invoiced or further payments occur.

Continuous and Periodic Supplies

Some transactions aren’t one-off sales; instead, they unfold over time. The VAT Act carves out these as special cases so that VAT is allocated to the periods as the supply progresses rather than all upfront or all at the end. Two broad categories are covered:

Rentals and Periodic Services: If a supply involves a series of successive payments for continuous access to goods or services (like rent for property, a maintenance contract, a subscription service, etc.), the law deems that each period (e.g. each month’s rent, each quarter’s service) is a separate supply at the time the payment for that period falls due or is received[15]. This approach matches economic reality: VAT is collected along the way, and the tenant (if a registered operator) can claim input in the period each rent payment is made or due.
Progressive/Instalment Deliveries: For contracts where goods or services are delivered in parts or phases and the contract calls for part-payments (instalments) tied to progress, each part is taxed as it completes. According to the VAT Act, each of those stages is a separate taxable supply. The time of each supply is when the payment for that stage becomes due, or is received, or when an invoice for that stage is issued – whichever happens earliest[16]. The key concept is matching VAT to each completed portion of the job. This prevents a scenario where a supplier might complete significant work (and even get paid) but tries to defer VAT until the very end of the contract. It also protects the purchaser’s input tax claim in stepwise fashion – they can claim as they pay each invoice.

Instalment Credit vs. Lay-by – Two Opposites

It’s worth comparing the treatment of instalment credit sales and lay-by sales, because they are almost mirror images of each other in terms of when delivery happens and how VAT timing is handled:

In an instalment credit sale (e.g. hire purchase): the buyer gets the goods immediately and pays over time (with or without interest). Here, the supply is effectively made upfront (the buyer enjoys the goods), so the VAT Act says the time of supply is at delivery or on first payment, whichever comes first[14]. In practical terms, it usually means the day the customer takes the goods home triggers VAT on the full selling price. This is sometimes a shock to businesses: you have to finance the VAT gap until you collect more installments. (Note: Finance charges or interest may be exempt financial services if shown separately, but the principal amount is taxed at delivery.)
In a lay-by sale: the buyer does not take the goods until they’ve paid a certain amount or the full price. Under Section 7(4)(a), a lay-by sale “shall not be deemed to be a supply” until the goods are actually delivered to the purchaser[12]. Thus, even though the seller receives deposits, no VAT is triggered at each payment – VAT is only triggered when handing over the goods. If the lay-by is cancelled or terminates and the seller keeps the deposit or any amount paid, the law deems the seller to have made a supply of services at that cancellation time[13]. The store must output VAT on that kept amount.

Connected Persons and Fair Market Value

When parties are related (e.g. parent and subsidiary company), they might transact in ways normal independent parties wouldn’t. Section 8(2)(a) steps in to set a clear tax point based on the actual transfer of goods or performance of services, rather than waiting for an invoice or payment that could be artificially postponed[9]. For goods that will be moved, time of supply is when they’re sent or delivered; for goods that aren’t moved (like something stored or made available), it’s when they’re made available; for services, when the service is done. The law even includes a proviso: if the parties do invoice or pay promptly (by the return due date), then the general rule applies. But absent that, ZIMRA doesn’t allow an indefinite loop. This goes hand-in-hand with valuation rules: the Act (Section 10) says supplies to connected persons should be valued at open market value if for inadequate consideration.

Fixed Property Sales – Timing Implications

The sale of real estate often involves lengthy processes (transfer registration, often deposits, etc.). The VAT Act’s approach (earlier of transfer or payment, or agreement date if neither) ensures VAT on property doesn’t slip through cracks. For example, if a developer sells a commercial stand and the buyer pays a 10% deposit on signing the agreement on 1 Feb 2025, that is the time of supply for that portion[44]. If the balance is paid later at transfer on 1 June, that additional payment triggers VAT on the balance. Alternatively, if no deposit was paid but transfer went through on 1 June, then 1 June is the tax point for the full amount. This means if a rate change occurs between deposit and transfer (e.g., Dec 2025 at 15% and Jan 2026 at 15.5%), the deposit is taxed at 15% and the balance at 15.5%.

Fringe Benefits and Deemed Supplies

A concept that advanced students should understand is that not all “supplies” for VAT require an actual sale to an outside customer – some are deemed by law. Time-of-supply rules cover these too. For instance, if a company gives an employee the use of a company car for personal purposes, the time of supply is aligned with how the benefit is taxed under income tax law: if the benefit’s value is included in the employee’s monthly taxable income, then each month-end that benefit is deemed supplied[20]. If the benefit is only assessed once a year (like certain use-of-assets that are taxed annually), then the time of supply is the last day of the year of assessment[20]. similarly, if an insurance company pays out an indemnity to a registered operator for loss of trading stock, the time of supply is when the payment is received[45].

Imported Services – Reverse Charge Details

As mentioned, for imported services the recipient must self-account for VAT. The triggers – invoice from the foreign supplier, payment, or performance – mean the local business cannot delay VAT simply by not paying the foreign supplier or waiting for an invoice. For example, if a Zimbabwean bank receives an advisory service from a UK consultant in April (performance), that April period triggers the VAT, even if no invoice or payment has occurred yet[24]. The VAT Regulations stipulate that the Zimbabwean recipient must declare and pay the VAT on an imported service by the 15th of the month following the month in which the supply occurred[24]. This accelerates compliance compared to the normal 25th-of-next-month deadline for returns.

Change in VAT Rates – Timing Traps

Changes in VAT rates (as happened with the rise to 15.5% in January 2026) are a textbook example of why time of supply matters. The law basically says: the VAT rate applicable is the one in force at the time of supply. Traps include:

Deposits/Progress Payments Straddling a Rate Change: A deposit taken on 20 Dec 2025 (rate 15%) followed by a final payment on 5 Jan 2026 (rate 15.5%). Each part is taxed at the rate in force at its respective tax point.
Invoices Dated Before vs. After: If an invoice was issued in Dec 2025 but delivery is in Jan 2026, the invoice date (Dec) is the tax point at 15%.
Category A vs. Category C filers: ZIMRA Public Notice 07 of 2026 instructed Category A taxpayers (Dec-Jan period) on how to split sales in the return to compute tax correctly at 15% for Dec and 15.5% for Jan[29][48].

D Real-World Applicability

Individuals

Individual business owners (sole traders) must be vigilant once registered. For example, a sole trader bakery issuing an invoice or taking a deposit triggers VAT immediately, which can be a shift from personal cash-basis habits. Landlords of commercial property face monthly VAT obligations on rent due dates, regardless of whether the tenant pays on time. On the consumer side, buying on lay-by protects individuals as VAT is only charged upon delivery, meaning they don't lose VAT on top of a forfeited deposit if they cancel.

SMEs

SMEs often face a cash flow trap by having to pay ZIMRA VAT on credit sales (once invoiced) before the customer actually pays. SMEs must plan for this by negotiating deposits or using factoring. Another hurdle is imported services: small businesses hiring foreign online freelancers or buying foreign software licenses must remember to self-assess VAT by the 15th of the following month. Failure to do so leads to interest and penalties discovered only during ZIMRA audits.

Large Corporates

Corporates must manage complex inter-group transactions where connected persons rules deem supplies as services are performed, not just when internally billed. Long-term construction or mining projects must align milestone payments with tax points. Large retailers dealing with lay-bys and instalment credit at scale need robust point-of-sale systems to handle VAT timing correctly. Additionally, large employers must coordinate HR and tax to output VAT on fringe benefits (cars, housing) either monthly or annually as per income tax integration.

E Case Law Integration

Delta Corporation Ltd v ZIMRA (2018)

The High Court underscored that VAT obligations must be satisfied according to the law and on time. While focusing on currency of payment, it reinforced that compliance with the statute (including timing) is not optional[52].

Regional Perspective: In *CSARS v British Airways plc (2005)* (South Africa), the court held VAT was due when the ticket was issued (invoice/payment), not when the flight took place, confirming the "earliest of" rule. In *Reliance Carpet Co Pty Ltd v Commissioner of Taxation (2008)* (Australia), a forfeited deposit was ruled subject to GST/VAT because the forfeiture was consideration for a deemed supply (the right to cancel), similar to Zimbabwe's Section 7(4)(b).

Implied Lessons: ZIMRA audits often serve as practical precedents. For example, if ZIMRA finds evidence of delivery (removal) without an invoice, they will deem the time of supply and assess VAT. Courts generally uphold that whenever the VAT Act deems something a supply at a certain time, that is when VAT must be paid, regardless of contractual intentions like " refundable deposit."

F Common Pitfalls

Failure to Recognize the Tax Point

Not recognizing that delivery (removal of goods) can set the tax point if no invoice or payment exists. This often leads to back-dated VAT plus penalties discovered in audits[55].

Advance Payments and Deposits

Not realizing that even a small deposit triggers VAT on that specific amount in the period received. Trying to call it a "refundable security deposit" only works if held in trust and not applied to the price.

Lay-by Confusion

Either paying VAT too early on lay-by receipts or applying lay-by rules to credit sales where goods were delivered upfront (where VAT was due immediately).

Invoicing Timing Mismatches

Invoicing far in advance or backdating invoices incorrectly. With fiscal devices, backdating is easily detected and can flag a business for audit.

Ignoring "Due Date" for Periodic Supplies

Thinking VAT isn't due because the client hasn't paid. If the agreement says payment is due by X date, that date triggers VAT even if unpaid[15].

Imported Services Oversights

Forgetting to self-assess VAT on foreign software/licenses and missing the specialized 15th-of-next-month deadline for payment[24].

Transitional Rate Mishandling

Applying the wrong VAT rate to transactions straddling a rate change (e.g., Dec 2025 vs Jan 2026) by not strictly following tax point rules for each part payment.

Not Issuing Fiscal Invoices on Time

Failing to issue an invoice within 30 days of the time of supply, which is a compliance breach and prevents customers from claiming input tax[51].

Connected Persons Timing Errors

Overlooking that inter-company movements of goods or services trigger VAT immediately upon "removal" or "performance," even if no cash changes hands ever[9].

Input Tax Timing Errors

Buyers trying to claim input tax based on a quote or a pro-forma invoice. Only a valid Fiscal Tax Invoice produced at the correct tax point allows for a claim[3].

Bad Debt Adjustments

Failing to realize that once VAT is paid on an invoice (per time of supply), if the debt goes bad, you must wait 12 months before claiming a VAT refund on that bad debt.

G Knowledge Check

Q1: Invoice vs. Payment: XYZ Ltd delivered goods on 10 March 2026. Payment was received 5 April, and the invoice issued 15 March. In which VAT period should XYZ declare the output VAT? (VAT rate 15.5%)

Q2: Continuous Supply: A firm bills monthly on the last day, payment due immediately. If Jan and Feb 2026 services aren't paid until April, when is the time of supply for each month?

Q3: Lay-by vs Credit: Customer A buys a TV on lay-by (delivers after 3 payments in Jan, Feb, Mar). Customer B buys on 31 March on credit (takes TV immediately, pays over 12 months). Compare the VAT timing.

Q4: Imported Service: An individual pays a foreign tutor $500 on 1 August 2025 via credit card. What is the VAT obligation by September 2025?

Q5: Connected Persons: PQR Pvt Ltd transfers a machine to its subsidiary on 1 May 2025 but doesn't invoice yet. When is the time of supply?

H Quiz Answers with Explanations

Answer 1: March 2026 period. The earliest of invoice (15 March) or payment (5 April) is 15 March[8].

Answer 2: 31 January and 28 February respectively. Each month's due date triggers VAT regardless of when the client pays (invoice basis)[15].

Answer 3: For Customer A (Lay-by), VAT is due at final delivery in March[12]. For Customer B (Credit), VAT is due upfront on 31 March (delivery date)[14]. Both fall in Jan-Feb/Mar return.

Answer 4: The individual must pay 15% VAT on the $500 by 15 September 2025 (Reverse Charge rule for imported services)[24].

Answer 5: 1 May 2025. For connected persons, physical delivery/removal triggers the tax point regardless of lack of invoice/payment[9].

I Key Takeaways

Earliest Rule: Earlier of invoice or payment (or performance if connected).
Lay-by Exceptions: Tax point occurs at delivery, protecting the seller from early VAT on receipts.
Credit Agreements: Full VAT on principal is due upfront at delivery.

Imported Services: Self-assess and pay by the 15th of next month to avoid penalties.
Fixed Property: Tied to earlier of transfer, payment, or agreement.
Rate Change Principle: VAT rate is dictated by the tax point (Dec vs Jan).