Before you start

A contract with a DRC-registered employer, or clarity that you are on an international-organisation or ecclesiastical arrangement treated differently
A CNSS number, obtained by the employer
An understanding of whether you are paid locally or offshore

Step-by-step

1
Establish which regime you are actually in
Foreign employment in this city clusters in three places — the church networks, the humanitarian sector and the diamond economy — and their tax positions differ. Staff of international organisations often hold privileges that change the position entirely; locally-recruited staff of the same organisation usually do not; and a church posting may be structured as a stipend rather than a salary. Get it in writing at offer stage.
Via employerWho: You and your employerBefore you signFree to ask
2
Let the employer withhold the IPR, and check the cap
Annual bands: 3% to CDF 1,944,000, 15% to CDF 21,600,000, 30% to CDF 43,200,000 and 40% above. IPR cannot exceed 30% of taxable salary whatever the bands produce. Congolese online calculators frequently omit the cap and overstate the bill.
Via employerWho: Your employerMonthly3–40% by band, capped at 30% of taxable salary
3
Check CNSS is taking 5%
Décret n° 18/041 du 24 novembre 2018 sets pensions at 10% split evenly between employer and worker, family benefits at 6.5% employer-only and occupational risks at 1.5% employer-only. Your side is the 5% pension half, and the contribution base can never fall below the guaranteed minimum wage.
Via employerWho: Your employerMonthly5% of remuneration
4
Understand the IERE even though you never pay it
The exceptional tax on expatriate remuneration is 25% of gross, borne by the employer and not withheld from you; mining companies pay 12.5% in their first ten years of activity. It explains why a local contract can come in lower than expected and why some employers prefer to engage foreigners offshore.
Via employerWho: Your employerMonthly, with the IPR return25% of gross, borne by the employer (12.5% for qualifying mining companies)
5
Leave your foreign income where it is
The DRC does not tax individuals on foreign-source income. That is unusually generous and, for anyone with income at home, the strongest planning fact available here. It does not mean the income is untaxed — your home country may still tax it, and the DRC's treaty network is thin.
OnlineWho: You, with an adviserBefore your first full tax yearAdviser fees

Documents you’ll need

Employment contract and CNSS number
Monthly payslips showing IPR and CNSS separately
Written confirmation of your status if you are on an international-organisation or church arrangement
Any home-country tax-residence certificate

Things most newcomers don’t know

The 40% top band is really 30%.

IPR cannot exceed 30% of taxable salary. Model your net on the cap and distrust any calculator producing a higher effective rate — a mistake that is common in Congolese online tools and expensive when you are negotiating a package remotely.

Source: PwC Worldwide Tax Summaries — DRC individual taxes

Foreign-source income is genuinely out of scope.

Most countries that host expatriates tax residents on worldwide income; the DRC does not tax individuals' foreign income at all. The entire planning question therefore sits on your home country's side of the line rather than the Congolese side.

Source: PwC Worldwide Tax Summaries — DRC

Your declared salary cannot be below your home country's minimum wage.

The DGI requires an expatriate's declared remuneration to be at least the SMIG of the country of origin. It exists to stop the token-local-salary-plus-offshore structure, which is common in extractive and mission contexts alike. Design around it rather than meeting it in an audit.

Source: DGI — impôt professionnel sur les rémunérations

There is no provincial income tax anywhere in the DRC.

Unlike federal systems, the Congolese provinces do not levy income tax on salaries, so nothing about being in Kasaï-Oriental rather than Kinshasa changes your personal rate. Provincial revenue comes from other instruments — which is why local levies on business and transport can feel arbitrary while your payslip does not.

Source: DGI — national tax code

Common mistakes to avoid

Assuming a colleague's international-organisation tax position is also yours
Budgeting the 40% band without the 30% cap
Reading the combined 18% CNSS rate as your own deduction
Accepting a hardship-allowance package without asking which taxes it falls inside
Assuming an offshore-paid salary is invisible — the minimum-declaration rule exists because it is not

Some of this may be out of date. Spotted something inaccurate? Help us keep it right for the next newcomer.