Imagine your Douala retail shop turned over 40 million CFAF last year but barely broke even after rent, salaries, and stock costs. Under Cameroon's new small-business tax, you still owe a flat 2 million CFAF — no deductions, no loss relief, no negotiation. That is the reality of the Impôt Général Synthétique (IGS), the Comprehensive Tax that has replaced the old discharge tax and simplified regime for businesses turning over up to 50 million CFAF. Here is who falls in scope, exactly what each bracket owes, when the money is due, and the withholding trap that is currently tying up small-business cash across the country.
What the IGS Is and What It Replaced
The IGS was created under Cameroon's local taxation law and has applied since the 2025 fiscal year. It folds several old obligations — the discharge tax (impôt libératoire), the simplified tax regime, the business license tax (patente), VAT, and personal income tax on business profits — into one single flat-rate tax for small businesses. The revenue goes to the municipalities (Communes and other Decentralized Territorial Communities), not the central Treasury: nearly 15 billion CFAF collected for the 2025 fiscal year was transferred to municipalities in the first half of 2026, a 14% increase on the year before, and since April 2026 those transfers flow automatically through an interconnection between the tax authority and the Treasury.
For you as a business owner, the headline change is philosophical. The old simplified regime taxed you as a percentage of turnover, paid monthly — the more you earned, the more you paid, proportionally. The IGS instead sorts you into a turnover class and charges a fixed annual amount for that class, paid quarterly. Your bill no longer moves with each month's sales. It jumps in steps when your turnover crosses a bracket line.
Who Falls Under the IGS
Since January 1, 2026, the IGS covers commercial, industrial, artisanal, and agricultural activities with annual revenue excluding taxes of no more than 50 million CFAF. For liberal professions and other non-commercial activities, the ceiling is lower, at 30 million CFAF.
Cross the ceiling and you leave the IGS behind entirely. A business that exceeds 50 million CFAF in turnover must move to the actual earnings regime, which means VAT and corporate income tax computed on real profit, monthly declarations instead of quarterly payments, and full detailed accounting records. Growing past the line is good news commercially, but it multiplies your compliance workload — so track your running turnover through the year rather than discovering in December that you crossed months ago.
The Brackets: What Each Turnover Class Pays
The tax is assessed on annual turnover, and each bracket carries a fixed yearly amount split into four quarterly installments:
| Annual turnover (CFAF) | Annual IGS (CFAF) | Per quarter (CFAF) |
|---|---|---|
| Below 500,000 | 20,000 | 5,000 |
| 500,000 – 1,000,000 | 30,000 | 7,500 |
| 1,000,001 – 1,500,000 | 40,000 | 10,000 |
| 1,500,001 – 2,000,000 | 50,000 | 12,500 |
| 2,000,001 – 2,500,000 | 60,000 | 15,000 |
| 2,500,001 – 5,000,000 | 150,000 | 37,500 |
| 5,000,001 – 10,000,000 | 300,000 | 75,000 |
| 10,000,001 – 20,000,000 (Class 8) | 500,000 | 125,000 |
| 20,000,001 – 30,000,000 (Class 9) | 1,000,000 | 250,000 |
| 30,000,001 – 50,000,000 (Class 10) | 2,000,000 | 500,000 |
If your turnover sits between 10 million and 50 million CFAF, you are in Class 8, 9, or 10 — and this is where the fixed-amount design bites hardest, because the steps between classes are enormous.
The cliff edge between classes
Consider two nearly identical businesses. One turns over 19 million CFAF and sits in Class 8, owing 500,000 CFAF for the year. The other turns over 21 million CFAF — just 2 million more in sales — and lands in Class 9, owing a full 1,000,000 CFAF. A roughly 10% difference in revenue doubles the tax bill. The same cliff exists between Class 9 and Class 10, where crossing 30 million in turnover doubles the bill again, from 1 million to 2 million CFAF.
This makes turnover forecasting a genuine tax-planning exercise under the IGS. In December, knowing whether you will finish the year at 29 million or 31 million CFAF is worth a million CFAF in tax. Businesses hovering near a boundary should model both outcomes before year-end rather than being surprised by their own success.
Turnover, Not Profit: You Owe It Even at a Loss
The single most misunderstood feature of the IGS is that it is levied on turnover, not on profit. A Class 10 business with 40 million CFAF in sales owes 2 million CFAF whether it made a healthy margin, scraped by, or traded at a loss all year. Unlike businesses under the actual earnings regime, you cannot reduce the IGS by deducting rent, salaries, fuel, electricity, internet, or any other operating cost. The tax functions as a fixed annual obligation of being in business at your turnover level.
For low-margin businesses — retail shops, distributors, transport operators — this can push the effective tax rate on actual profit uncomfortably high in a bad year. The planning implication is blunt: the IGS must be treated as a first-priority fixed cost in your budget, alongside rent, not as something you pay out of whatever profit remains. If your margins are thin enough that the fixed IGS threatens viability, that is the year to scrutinize costs or consider whether your activity mix still makes sense — the tax administration will not adjust the bill because you had a difficult year.
What the IGS Covers — and What It Does Not
The word "comprehensive" means the IGS replaces several tax obligations at once. Businesses under the regime are generally free from the business license tax, VAT, and personal income tax on their business profits. That consolidation is the regime's real selling point: one tax, one annual declaration, four payments, no monthly VAT filings.
But the IGS does not make you exempt from everything else. You still owe:
- Employee salary taxes and payroll declarations
- Withholding taxes on rent paid to landlords
- Sector-specific fees and operating licenses
- Social insurance (CNPS) obligations for your staff
- Liquor license fees, where applicable
New business owners sometimes hear "comprehensive tax" and stop filing everything else. Do not make that mistake — the IGS covers your business-profits taxation, while your responsibilities as an employer and tenant continue unchanged.
When the Money Is Due: Quarterly Payments, Annual Declaration
Under the old monthly rhythm, businesses paid smaller amounts twelve times a year. The IGS compresses that into four larger quarterly installments, each due no later than the 15th day after the quarter ends:
- Q1 (January–March): due by April 15
- Q2 (April–June): due by July 15
- Q3 (July–September): due by October 15
- Q4 (October–December): due by January 15 of the following year
Separately, the tax declaration itself is annual. Taxpayers managed under the Divisional Tax Centres (Centres Divisionnaires des Impôts, CDI) must file the yearly IGS declaration by May 15. Missing that deadline can trigger an arbitrary assessment — the tax office estimates your turnover itself, typically higher than reality — plus late penalties and surcharges, and the local taxation law even authorizes temporary closure of the business for non-compliance.
The practical danger is psychological: with no monthly deadline forcing the habit, the cash you should be reserving sits in your account looking spendable for three months, until a 500,000 CFAF quarterly bill lands all at once. Set the money aside monthly anyway, internally, so each quarterly deadline is a transfer rather than a scramble.
The Withholding Trap Tying Up Cash in 2026
Since January 2026, a second cash-flow squeeze has arrived on top of the quarterly bills. Designated customers must now withhold tax at source on invoices paid to IGS taxpayers: 2% of the pre-tax invoice value generally, rising to 5% for services supplied to the central government, local authorities, and public institutions under public procurement contracts.
The sting is in the timing. Under the guidance implementing the 2026 Finance Law, amounts withheld during the year cannot be deducted from your quarterly IGS installments. They can only be credited against the IGS you owe the following year. A small contractor that invoices a public entity 10 million CFAF before tax for a service has 500,000 CFAF withheld — and that half-million reduces nothing in 2026. It sits as a credit usable only against the 2027 IGS, while the business still pays every 2026 quarterly installment in full.
The Cameroon Chamber of Commerce (CCIMA) has flagged exactly this problem: businesses whose activity declines, that shut down, or that graduate out of the IGS into the actual earnings regime could be left holding credits they can never use, since the regulations say the credit applies the following year but say nothing about refunds of leftover balances. CCIMA has proposed allowing refunds of unused balances on cessation or regime change, one of 24 private-sector proposals the tax authority is assessing ahead of the 2027 Finance Law. Until the rules change, treat every withholding as cash that leaves your hands for at least a year — and keep every withholding certificate your customers issue, because without the paperwork you cannot claim the credit next year either.
A Survival Playbook for the IGS Transition
Pulling it together, here is how to stay on top of the new regime:
- Know your class at all times. Keep a running monthly total of turnover and compare it against the bracket boundaries. If you are approaching 20 million or 30 million CFAF late in the year, model the tax cost of crossing before you chase extra December sales.
- Reserve monthly, pay quarterly. Divide your expected annual IGS by twelve and move that amount into a separate reserve each month. The quarterly deadlines then take care of themselves.
- Calendar the two rhythms separately. Quarterly payments by the 15th of April, July, October, and January; the annual declaration by May 15. Missing the declaration is worse than missing a payment, because it invites an arbitrary assessment.
- Track withholdings as a receivable. Log every 2% or 5% withholding with its certificate in a dedicated account, so the full credit is documented and ready when next year's IGS falls due.
- Keep the non-IGS filings current. Payroll declarations, rent withholding, and social insurance run on their own schedules and their own penalties — the IGS exempts you from none of them.
- Watch the 50 million ceiling. Sustained growth past 50 million CFAF means graduating to monthly VAT and corporate tax filings. Start keeping the detailed records that regime demands before you cross, not after.
Good bookkeeping is what makes every one of these steps possible. The IGS rewards businesses that know their exact turnover position at any point in the year — the cliff edges between classes punish guesswork, the quarterly rhythm punishes businesses that confuse cash in hand with cash available, and the withholding system punishes anyone who loses a certificate. A simple monthly routine of recording sales, reserving the tax portion, and filing withholding slips turns a stressful new regime into a predictable one.
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