Calculating Progressive ITS in Guinea 2026: The Complete Guide for HR and CFOs

The essentials in three bullets

• Guinean ITS is a progressive six-bracket scale (0% to 20%) defined by Article 63 of the General Tax Code (Law L/2021/032/AN of 4 July 2021, in force since 1 January 2022)
• Each bracket of taxable salary is taxed at a different rate — the calculation is done bracket by bracket, with no flat-rate allowance
• Article 59 of the 2022 CGI is explicitly "Repealed": no 10% or 20% flat-rate allowance applies to taxable salary

Salary Income Tax (ITS) is the first deduction line on every payslip in Guinea. And it is precisely where most errors occur — particularly in SMEs and subsidiaries of pan-African groups still applying old scales or continuing to use flat-rate allowances that have been repealed by the 2022 CGI.

Whether you are HR at Vista Bank Guinea, CFO of a mining company in Boké, or a managing partner at a Conakry accounting firm, this guide gives you the exact method to calculate ITS in line with Article 63 of the 2022 CGI — with three worked examples.

The official legal framework — Law L/2021/032/AN of 4 July 2021

ITS is the income tax withheld at source on all salaries paid in Guinea. It is defined by Law L/2021/032/AN of 4 July 2021 enacting the General Tax Code of the Republic of Guinea, promulgated by Decree D/2021/236/PRG/SGG of 21 July 2021, published in the Special Official Journal No. 2021-8 of 27 August 2021, and entered into force on 1 January 2022.

ITS applies to all employers in the country — private companies, subsidiaries of foreign groups, NGOs, self-employed professionals.

Three essential characteristics:

The scale is progressive (CGI Article 63) — as in most civil-law countries. The salary is broken into brackets, and each bracket is taxed at a rate that rises with income. It is not a single average rate applied to the total salary.

The tax is withheld at source (CGI Articles 61 and 64) — the employer deducts ITS from the salary each month and remits it to the tax authority before the 15th of the following month. The withholding is in full discharge under Article 64.

The calculation is done on monthly taxable income (CGI Article 58) — that is, gross salary less:

1. Mandatory social contributions (employee CNSS)
2. Mandatory pension withholdings

No flat-rate allowance applies: Article 59 of the 2022 CGI is explicitly marked "Repealed". The 10% or 20% allowance sometimes referenced in older sources no longer has any legal basis in Guinea since the 2022 CGI took effect.

The ITS scale (Article 63) — official citation

Here is the progressive scale as it applies to Guinean salaries in 2026, cited verbatim from the official text:

"Art. 63: The amount of the withholding is calculated by applying to the monthly taxable income the following rates:

— For the income bracket from 0 to 1,000,000 Guinean francs: 0% — For the income bracket from 1,000,001 to 3,000,000 Guinean francs: 5% — For the income bracket from 3,000,001 to 5,000,000 Guinean francs: 8% — For the income bracket from 5,000,001 to 10,000,000 Guinean francs: 10% — For the income bracket from 10,000,001 to 20,000,000 Guinean francs: 15% — For the income bracket above 20,000,000 Guinean francs: 20%."

⚠️ The key trap: an employee with 8,000,000 GNF of taxable salary is not taxed at 10%. They are taxed at 0% on the first million, 5% on the next 2 million, 8% on the 2 million in the third bracket, and 10% only on the remainder. The effective average rate is much lower than the apparent marginal rate.

🚨 Beware obsolete scales: some payroll software or HR documentation installed before 2022 still use rates up to 35%. Those scales are obsolete since the 2022 CGI took effect. The legal maximum rate in Guinea is now 20%.

How to calculate ITS step by step — the official method

The correct method is to break the taxable salary into brackets, apply each bracket's rate, and sum the ITS from each bracket.

Step 1: Calculate the employee CNSS contribution. The legal rate is 5% on a capped base of 2,500,000 GNF/month, i.e. a maximum employee contribution of 125,000 GNF/month (official source: cnss.gov.gn, Law L/94/006/CTRN of 14 February 1994 enacting the Social Security Code).

Step 2: Compute the taxable salary = gross salary − capped employee CNSS − any mandatory pension withholdings (CGI Article 58)

Step 3: Break this taxable salary into brackets per the Article 63 scale

Step 4: Apply each bracket's rate

Step 5: Sum the partial ITS to get the total monthly ITS

Three concrete examples in Guinea

Note: the examples below apply the capped employee CNSS of 125,000 GNF/month (= 5% × 2,500,000 GNF assessment ceiling), confirmed by the official CNSS Guinea website.

Example 1 — Mamadou Camara, delivery driver at SOBRAGUI in Conakry

• Monthly gross salary: 2,500,000 GNF (exactly at the CNSS assessment ceiling)
• Capped employee CNSS: 5% × 2,500,000 = 125,000 GNF
• Taxable salary (Art. 58): 2,500,000 − 125,000 = 2,375,000 GNF

ITS calculation bracket by bracket (Art. 63):

• Bracket 1 (0 to 1,000,000 GNF): 1,000,000 × 0% = 0 GNF
• Bracket 2 (1,000,001 to 2,375,000 GNF): 1,375,000 × 5% = 68,750 GNF

Mamadou's monthly ITS: 0 + 68,750 = 68,750 GNF

Effective rate check: 68,750 / 2,500,000 = 2.75% of gross salary. That is much lower than any "average rate" you would apply by mistake. Mamadou's monthly net after CNSS and ITS is 2,500,000 − 125,000 − 68,750 = 2,306,250 GNF.

Example 2 — Fatoumata Bah, accountant at Vista Bank Guinée in Conakry

• Monthly gross salary: 6,000,000 GNF (above the CNSS assessment ceiling)
• Capped employee CNSS: 5% × 2,500,000 = 125,000 GNF
• Taxable salary (Art. 58): 6,000,000 − 125,000 = 5,875,000 GNF

ITS calculation bracket by bracket (Art. 63):

• Bracket 1 (0 to 1,000,000 GNF): 1,000,000 × 0% = 0 GNF
• Bracket 2 (1,000,001 to 3,000,000 GNF): 2,000,000 × 5% = 100,000 GNF
• Bracket 3 (3,000,001 to 5,000,000 GNF): 2,000,000 × 8% = 160,000 GNF
• Bracket 4 (5,000,001 to 5,875,000 GNF): 875,000 × 10% = 87,500 GNF

Fatoumata's monthly ITS: 0 + 100,000 + 160,000 + 87,500 = 347,500 GNF

Effective rate check: 347,500 / 6,000,000 = 5.79%. If Vista Bank Guinea's payroll had been set up with an old scale (for instance a flat 15% as sometimes seen in payrolls not updated since 2022), nearly 900,000 GNF of ITS would have been withheld — that is more than 550,000 GNF too much each month, around 6.6 million GNF per year in lost net pay for Fatoumata. The kind of error that leads straight to a labour tribunal dispute.

Example 3 — Ibrahima Diallo, geologist engineer at Société Minière de Boké (SMB)

• Monthly gross salary: 14,000,000 GNF (well above the CNSS assessment ceiling)
• Capped employee CNSS: 5% × 2,500,000 = 125,000 GNF
• Taxable salary (Art. 58): 14,000,000 − 125,000 = 13,875,000 GNF

ITS calculation bracket by bracket (Art. 63):

• Bracket 1 (0 to 1,000,000 GNF): 1,000,000 × 0% = 0 GNF
• Bracket 2 (1,000,001 to 3,000,000 GNF): 2,000,000 × 5% = 100,000 GNF
• Bracket 3 (3,000,001 to 5,000,000 GNF): 2,000,000 × 8% = 160,000 GNF
• Bracket 4 (5,000,001 to 10,000,000 GNF): 5,000,000 × 10% = 500,000 GNF
• Bracket 5 (10,000,001 to 13,875,000 GNF): 3,875,000 × 15% = 581,250 GNF

Ibrahima's monthly ITS: 0 + 100,000 + 160,000 + 500,000 + 581,250 = 1,341,250 GNF

Effective rate check: 1,341,250 / 14,000,000 = 9.58%. In the mining sector where executive compensation is high and tax audits are frequent, flawless application of the Article 63 progressive scale is non-negotiable.

Common errors seen in Guinean payrolls

After multiple payroll audits at Guinean SMEs and large groups, here are the systematic errors encountered since the 2022 CGI took effect:

Error 1 — Using an old scale. Several payroll software products installed before 2022 still use the old rates up to 35%. Result: systematic over-taxation of employees, risk of disputes and refunds.

Error 2 — Applying a 10% or 20% flat-rate allowance. Article 59 of the 2022 CGI is explicitly "Repealed". No flat-rate allowance applies to taxable salary. Article 58 limits deductions to mandatory social contributions and pension withholdings only. Applying it today understates the ITS base and exposes the company to a tax reassessment.

Error 3 — Forgetting the CNSS assessment ceiling. The monthly assessment ceiling is 2,500,000 GNF (source: cnss.gov.gn) — the 5% employee contribution is therefore capped at 125,000 GNF/month maximum. Many payrolls still apply 5% on the entire gross salary, over-deducting from the employee and thus underestimating the actual taxable salary.

Error 4 — Applying a single rate instead of the progressive scale. The HR or accountant picks an "average rate" (often 10% or 15%) and applies it to the entire taxable salary. Result: either the employee overpays ITS, or the company underpays — hence the reassessment.

Error 5 — Mishandling of exceptional bonuses and allowances. A year-end bonus that pushes the monthly salary into a higher bracket must be handled carefully. Some payrolls "forget" to include these bonuses in the month's ITS base.

Error 6 — Confusing ITS with IRPP. Some HR managers from international backgrounds equate ITS with classic personal income tax. In Guinea, ITS is specifically the tax withheld at source on salaries, defined by Article 63 of the 2022 CGI, with its own rules.

Risks when getting it wrong

For a Guinean company, an ITS calculation error creates three quantifiable types of risk:

Tax reassessment — the administration can reassess up to 3 years back. For a company of 50 executives whose payroll uses an obsolete allowance, the accumulated shortfall can reach hundreds of millions of GNF — not counting interest and penalties.

Individual labour disputes — an employee who discovers they are paying too much ITS (because of an old 35% scale) can take the case to the labour court. Typical cost: reimbursement of accumulated overpayment plus damages.

Damage to the employer brand — in a Guinean market where good profiles move quickly between Orabank, Afriland, Vista Bank, UBA and NSIA, a company whose employees complain about incorrect payslips loses its appeal.

How Wali automates ITS calculation

At Wali, the Article 63 of the 2022 CGI progressive scale is built natively into the payroll engine. Every time a payslip is generated, the bracket-by-bracket calculation runs automatically from the gross salary entered, with:

• Strict application of the 0 / 5 / 8 / 10 / 15 / 20% scale across the 6 brackets
• Prior deduction of the capped employee CNSS (per the Social Security Code)
• No flat-rate allowance (compliant with the Article 59 repeal)
• Generation of a PDF payslip showing the per-bracket ITS breakdown, signed with a QR code for authenticity verification

When the finance act amends the thresholds or rates, the update is applied for all our clients without any action from you.

To explore the Wali Payroll module, request a free demo at walirh.com.

FAQ

At what rate is a gross salary of 8,000,000 GNF taxed in Guinea?

A gross salary of 8,000,000 GNF, after deducting capped employee CNSS (125,000 GNF, official source cnss.gov.gn), yields a taxable salary of 7,875,000 GNF. ITS is then calculated bracket by bracket (Article 63): 0 GNF on the first bracket (0–1M), 100,000 GNF on the second (5% on 2M), 160,000 GNF on the third (8% on 2M), and 287,500 GNF on the fourth bracket portion (10% on 2,875,000 GNF). That is 547,500 GNF total ITS, an effective rate of 6.84% of gross salary.

Is ITS calculated on the gross or net salary?

Neither exactly. Article 58 of the 2022 CGI defines net taxable income: gross salary minus (1) mandatory social contributions (employee CNSS) and (2) mandatory pension withholdings. No flat-rate allowance applies.

Does the 20% flat-rate allowance still apply?

No. Article 59 of the 2022 CGI — which likely contained that allowance in the old Code — is explicitly repealed in the official text published in JO No. 2021-8 special of 27/08/2021. Any ITS calculation that still applies it today is non-compliant.

Which bonuses are subject to ITS in Guinea?

Monthly bonuses, performance bonuses, year-end gratuities and exceptional allowances are all part of the ITS base. Genuine expense reimbursements on receipts are excluded, provided they are documented.

What happens for employees paid partly in USD?

For some foreign subsidiaries in Guinea (mining, international NGOs), part of the salary may be paid in USD. In that case, conversion to GNF at the month's average rate is mandatory for ITS calculation. All compensation is taxable.

Does the ITS scale change every year?

The scale currently in force in 2026 is the one defined by Article 63 of the 2022 CGI (Law L/2021/032/AN of 4 July 2021). Thresholds and rates may be adjusted in annual finance acts, but the scale above remains applicable until further notice.

Is the maximum ITS rate really 20%?

Yes. The maximum marginal rate applicable in Guinea is 20% for the fraction of taxable salary above 20,000,000 GNF/month, in accordance with Article 63 of the 2022 CGI. Older scales mentioning 25% or 35% are obsolete.

Sources and legal references

• Law L/2021/032/AN of 4 July 2021 enacting the General Tax Code of the Republic of Guinea, promulgated by Decree D/2021/236/PRG/SGG of 21 July 2021
• Special Official Journal No. 2021-8 of 27 August 2021 — General Tax Code (full text)
• Article 63 of the 2022 CGI: progressive ITS scale (verbatim citation above)
• Article 58 of the 2022 CGI: determination of net taxable income
• Article 59 of the 2022 CGI: repealed
• Article 61 of the 2022 CGI: employer's obligation to withhold at source
• Article 64 of the 2022 CGI: full-discharge nature of the withholding
• Law L/94/006/CTRN of 14 February 1994 — Social Security Code (CNSS)
• Official CNSS Guinea site — cnss.gov.gn: assessment ceiling 2,500,000 GNF

This article is part of the "Guinean Payroll Compliance" series on the Wali blog. Next: CNSS Guinea 2026: 18% + 5% contributions explained with the Lump-Sum Payment and Apprenticeship Tax.

Wali is the first 100% Guinean SIRH, developed by RadianNa Solutions in Conakry. Natively compliant with the Labour Code, the 2022 General Tax Code and OHADA. Discover the platform at walirh.com.