Most capital gains tax problems assume a clean, instantaneous sale: money changes hands, ownership passes, and the whole gain crystallises in one moment. Real Zimbabwean property and business deals rarely behave so tidily. A farm is sold "on terms" with the price paid over five years and ownership withheld until the last instalment clears. A motor dealer sells a fleet on credit, passing ownership on delivery but collecting the price in monthly instalments. These deferred-payment structures create a timing problem at the heart of CGT: when, and on how much, is the tax charged when the seller has not yet been paid? This lesson resolves that problem clause by clause.
The governing provisions are Sections 18 and 19 of the Capital Gains Tax Act [Chapter 23:01], read with the deeming rules in Section 8 and the deductions in Section 11(2). The two sections deal with two factually distinct deferred-payment structures. Section 18 — "Provisions for sales of immovable property under suspensive conditions" governs the suspensive sale: an agreement whose effect is that ownership passes only upon or after the seller receives the whole or a certain portion of the price. Section 19 — "Provisions relating to credit sales where ownership passes" governs the credit sale: an agreement whose effect is that ownership passes on delivery but the price is paid in instalments. The line between them is when ownership passes — after payment (Section 18) or on delivery (Section 19).
Both sections share one striking baseline rule: the whole amount payable is deemed to have accrued to the seller on the date the agreement was entered into (Section 18(1); Section 19(1)). The legislature deliberately refuses to wait for the instalments. This protects the revenue (the seller cannot indefinitely defer the gain by structuring a 30-year payment plan) and fixes the year of assessment in which the disposal falls. But charging the full gain immediately, when the seller holds only a fraction of the cash, would be punitive. So each section then grants a spreading allowance for the portion of the deemed accrual that is not yet receivable at the end of the year of assessment, with that allowance added back as a capital amount in the following year — a rolling mechanism that effectively spreads the gain over the collection period.
For suspensive sales (Section 18), the allowance is computed by a statutory formula whose variables the Act defines precisely: A = the portion of the deemed accrual not receivable at year-end; B = the capital amount deemed to have accrued; C = the aggregate of the deductions allowable under Section 11(2)(a), (b), (c) and (d) (acquisition cost, improvements, the inflation allowance, and selling costs); and D = the amount deemed to have accrued. For credit sales (Section 19), the allowance is discretionary — "such further allowance as seems to [the Commissioner] reasonable" for amounts not receivable at year-end, taking the Section 11(2)(e) bad-debt deduction into account. In both cases the allowance is a deferral, not a forgiveness: it is reversed the next year (Section 18(1) proviso (ii); Section 19(1) proviso (ii)).
Three anti-abuse and integrity rules complete the picture. First, where a suspensive-sale agreement is cancelled (the buyer defaults and the deal collapses), Section 18(2) brings to account the difference between what the seller actually received and what was already taxed — squaring the books for the failed deal. Second, where the Section 18 or Section 19 allowance applies, the small-gain de minimis deduction in Section 11(2)(h) is disallowed (Section 18(3); Section 19(2)) — you cannot spread a gain and wipe it out with the small-gain allowance. Third, a transfer of the seller's rights under a deed of sale is itself a deemed disposal (Section 8(2)(f)) and is pulled into Section 18 by Section 18(4), so the seller of a "paper" right cannot escape the section.
The rate the spread gain ultimately attracts is the ordinary Finance Act [Chapter 23:04] Section 38 rate — 5% of the gross capital amount if the asset was acquired before 22 February 2019, or 20% of the capital gain if acquired on or after that date. Critically, payment timing for suspensive and credit sales is governed by Section 26(1)(a) of the CGT Act: the tax is due no later than 30 days from the date the specified asset accrues under Section 18(1) or Section 19(1) — i.e. tied to the deemed-accrual mechanism, not to the receipt of each instalment.
A practitioner who confuses Section 18 with Section 19, who forgets that the whole price is deemed to accrue up front, who fails to add the prior-year allowance back, or who tries to combine the spreading allowance with the small-gain wipe-out, will mis-state the gain — usually under-declaring it and inviting an additional assessment under the borrowed Income Tax Act Section 46. This lesson builds directly on the Introduction to Capital Gains (the deemed-sale rules of Section 8(2)), the lessons on Allowable Deductions (Section 11(2)) and the Calculation of the Capital Gain, and the lesson on Returns and Assessments (the 30-day return). One important caveat is flagged throughout: the precise algebraic expression of the Section 18 formula is an embedded equation in the source Act that did not render cleanly in the consolidated text — the four variables are confirmed verbatim, but the exact arithmetic relationship between them is flagged for verification before it is relied on in a live computation.
