Tanzania is one of East Africa's most attractive markets for strategic buyers and private equity: a large population, a growing middle class, strategic ports, and resource endowments that draw international capital. It is also a market where two provisions of the Income Tax Act routinely reshape deal terms after a price has been agreed in principle.
Section 56 — the change-of-control rule — and the Alternative Minimum Tax are both well known to experienced acquirers and their advisers. They are frequently unknown to the founders on the other side of the table, and that asymmetry is expensive. This article explains how both operate, how they show up in diligence, and why they affect valuation long before any transaction is contemplated.
Section 56: a three-year rolling window
Section 56 applies where the underlying ownership of an entity changes by more than 50% compared with its ownership at any time during the previous three years.
That construction is materially harsher than a simple transaction test. It is not asking whether one deal transferred more than half the company; it is asking whether, measured against any point in a rolling three-year window, more than half the underlying ownership has moved. A sequence of individually modest transfers aggregates. A founder who sells 30% in year one and a further 25% in year two has crossed the line even though neither transaction came close on its own.
Where it applies, the consequences are substantial:
The entity is treated as realising every asset and liability immediately before the change, at market value.
Any resulting gain is taxed at the 30% corporate rate.
The accounting year is split into two periods, before and after the change, each with its own computation.
Tax losses incurred before the change can no longer be carried forward.
The entity is expected to notify the Tanzania Revenue Authority.
Because the test looks at underlying ownership, a transaction concluded entirely abroad — the sale of a parent company, a fund's own exit, a merger between offshore shareholders — can trigger the charge in a Tanzanian subsidiary that was not a party to it.
The year-split provision deserves more attention than it usually gets. It is not merely administrative. Splitting the year changes how income, expenses, capital allowances and losses are allocated between the two periods, and the allocation can be contentious. Two computations also mean two opportunities for the position to be challenged.
The Alternative Minimum Tax: paying tax on losses
Companies reporting tax losses for three consecutive years become liable to a minimum tax calculated on turnover rather than profit. The Finance Act 2025 doubled the rate from 0.5% to 1% of turnover with effect from 1 July 2025.
For thin-margin, high-volume businesses — distributors, importers, large-format retailers — this is a real cash cost, and it arrives in exactly the years when cash is scarcest. A business turning over TZS 12 billion at a genuine operating loss pays TZS 120 million regardless.
The valuation consequence is less obvious but often larger. Persistent losses now carry a visible price, which prompts an obvious question from any buyer: why has this business not made money for three years? The answers divide into two categories, and buyers test which one applies. Either the business model is not working, in which case the valuation reflects that; or the losses are the product of aggressive expense allocation, related-party charges and transfer pricing, in which case the buyer is looking at a tax exposure rather than a loss-making business. Neither answer is comfortable, and a founder who has not thought about which one their accounts tell will not control the narrative.
A worked illustration
A Dar es Salaam distributor has turnover of TZS 12 billion and has reported tax losses for three years, partly as a result of management fees and related-party charges routed through an affiliated entity.
AMT at 1%: TZS 120 million per year, payable irrespective of the losses.
A foreign group acquires 70% of the company.
Section 56 is triggered: assets with a tax value of TZS 2 billion are valued at TZS 3.5 billion, creating a deemed gain of TZS 1.5 billion and tax of TZS 450 million.
Accumulated tax losses of TZS 800 million are forfeited, eliminating the shelter the founder had assumed would protect future profits.
A buyer will price all three items. The AMT becomes a recurring cost in the model. The section 56 charge becomes an indemnity, an escrow, or a straight price reduction. The forfeited losses reduce the post-acquisition cash flows the buyer is paying for. None of these were negotiated; they were discovered, and the founder absorbed them in a lower number.
The figures are illustrative. The compounding is characteristic.
What acquirers test in a Tanzanian target
Buyers who have done this before arrive with a specific list:
A three-year history of the share register, typically reconstructed from BRELA filings, to test section 56 exposure across the rolling window rather than at a single date.
Evidence that tax losses are genuine and not manufactured through expense allocation, management fees or non-arm's-length pricing.
Transfer pricing documentation for related-party supplies, management fees, royalties and intercompany financing.
Tax clearance status and the full position on open TRA audits, objections and appeals, including matters at the Tax Revenue Appeals Board or Tribunal.
Compliance across withholding tax, VAT and payroll, which is where exposures in the region most often accumulate quietly.
The pattern is consistent: the diligence is directed less at whether the business is profitable than at whether its reported position is defensible. A target that can answer these questions quickly is negotiating; one that cannot is being assessed.
Section 56 is a fundraising problem, not only an exit problem
Founders typically encounter section 56 when selling, and by then they are at least expecting a tax discussion. The more damaging encounters happen during growth rounds.
A founder owning 100% brings in an investor for 30% in year one to fund expansion, then a second investor for a further 25% in year two to fund the next stage. Underlying ownership has changed by more than 50% within the three-year window. The company faces a deemed realisation it never anticipated, triggered by raising capital — and the cash to pay it has typically already been deployed into the expansion the money was raised for.
The rolling window also means a transaction can be triggered by something that happened before the current investors arrived. Historic transfers between founders, a family restructuring, an employee share allocation — all count toward the measurement.
The listing alternative
Tanzania offers a reduced corporate tax rate of 25% for three years to companies newly listed on the Dar es Salaam Stock Exchange that issue at least 30% of their shares to the public.
The 2017 Vodacom Tanzania IPO, driven by the requirement for telecom operators to list part of their shares locally, demonstrated that public markets can deliver genuine liquidity for large Tanzanian businesses. For well-governed companies of sufficient scale, a DSE listing functions simultaneously as a partial exit for existing shareholders, a capital-raising event, and a tax-advantaged structure. It also sidesteps some of the change-of-control dynamics that make private transactions complicated — though it introduces disclosure and governance obligations that most private companies are not ready to carry.
The questions that decide your exposure
Where does your cumulative underlying ownership change stand against the rolling three-year window — not at your last transaction, but at every point within it?
What is the market value of your assets and liabilities against their tax values, and therefore what would a deemed realisation actually cost today?
If your company has reported losses, can you demonstrate they are commercial rather than structural — and would your related-party pricing survive a transfer pricing review?
Are your accumulated losses valuable enough that protecting them should influence how a deal is structured?
Does your planned sequence of funding rounds cross the threshold, and is there a commercially genuine alternative that does not?
Is a DSE listing realistically within reach on your scale and governance trajectory, and would the three-year rate reduction change your growth plan?
Where founders need guidance
Clean structures attract capital. Messy ones attract discounts. In Tanzania the distance between the two is usually a handful of decisions made two or three years before anyone thinks a transaction is coming — how rounds were sequenced, whether related-party pricing was documented, whether the share register was maintained properly at BRELA.
Working out where your company actually sits against section 56, what a deemed realisation would cost, and how to allocate that risk in a deal is specific analytical work. Acquihub advises founders and investors in Tanzania and across East Africa on change-of-control exposure, deal structuring, valuation and exit orchestration. If you are planning a raise or approaching a sale, speak to us before the term sheet, not after.
Frequently asked questions
What is section 56 in Tanzania's Income Tax Act? A change-of-control provision. Where the underlying ownership of an entity changes by more than 50% compared with its ownership at any time in the previous three years, the entity is treated as realising all its assets and liabilities at market value immediately before the change.
What happens to tax losses when section 56 applies? Losses incurred before the change can no longer be carried forward. This is frequently the largest economic cost of the provision for businesses that have invested heavily.
What is the Alternative Minimum Tax in Tanzania? A minimum tax based on turnover rather than profit, applying to companies that report tax losses for three consecutive years. The Finance Act 2025 raised the rate from 0.5% to 1% of turnover with effect from 1 July 2025.
Can a series of small share transfers trigger section 56? Yes. The test measures cumulative change in underlying ownership against a rolling three-year window, so transactions that are individually below the threshold can combine to cross it.
Does an offshore sale trigger section 56? It can. Because the test looks at underlying ownership, a transaction concluded entirely outside Tanzania — including the sale of a parent company — can trigger the provision in a Tanzanian subsidiary.
What tax incentive applies to a DSE listing? A reduced corporate income tax rate of 25% for three years for companies newly listed on the Dar es Salaam Stock Exchange that issue at least 30% of their shares to the public.