Before you start

A contract with a DRC-registered employer who registers you with the DGI and the CNSS
A CNSS number, obtained by the employer
Clarity on whether your employer is taxed under the general regime or the Code minier — it changes their numbers, and therefore your negotiation

Step-by-step

1
Let the employer withhold the IPR, and check the cap is applied
Annual bands: 3% to CDF 1,944,000, 15% to CDF 21,600,000, 30% to CDF 43,200,000 and 40% above. The cap is the part that matters: IPR cannot exceed 30% of taxable salary whatever the bands produce, so the effective top rate is 30%, not 40%. Several widely-used Congolese salary calculators apply the bands without the cap.
Via employerWho: Your employerMonthly3–40% by band, capped at 30% of taxable salary
2
Check CNSS is taking 5%, not 18%
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. The contribution base cannot fall below the guaranteed minimum wage.
Via employerWho: Your employerMonthly5% of remuneration
3
Establish which IERE rate your employer pays
The exceptional tax on expatriate remuneration is 25% of gross, borne by the employer and never withheld from you — except that mining companies pay 12.5% during their first ten years of activity. In Haut-Katanga a large share of foreign hires sit with employers on the mining rate. Knowing which side of that line your employer is on tells you a great deal about how expensive you are to them.
Via employerWho: Your employerMonthly, with the IPR return25% of gross generally; 12.5% for qualifying mining companies
4
Check whether occupational-risk cover matches the actual risk
The CNSS occupational-risks branch is employer-funded at 1.5% and Article 5 of the 2018 decree allows the rate to be doubled for non-compliant employers. In a mining province this branch is not a formality. Ask specifically what happens on an industrial injury — CNSS cover, the employer's private cover and any mine-site medical arrangement are three different things.
Via employerWho: You, at onboardingBefore you startEmployer-funded
5
Leave your foreign income where it is, and check your home country
The DRC does not tax individuals on foreign-source income. That is unusually generous and it is the strongest single fact in this guide. It does not mean the income is untaxed — your home country may still tax you, and the DRC's treaty network is thin. Take advice on the home-country side.
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 which IERE rate your employer applies, if you are negotiating
Any home-country tax-residence certificate

Things most newcomers don’t know

The mining IERE rate is the most valuable number in a Katanga salary negotiation.

A general employer pays 25% of your gross to the state simply for employing an expatriate; a qualifying mining company pays 12.5% for its first ten years. On a USD 120,000 package that is a USD 15,000 difference in what you cost, and it explains why offers from mining majors and from their service contractors can differ so much for the same job.

Source: PwC Worldwide Tax Summaries — DRC other taxes; DGI

The DRC's 40% top band is really 30%.

IPR is capped at 30% of taxable salary. For senior mining staff — most of the expatriate population here — that cap is the operative rule and the headline band is not. Model your net on the cap.

Source: PwC Worldwide Tax Summaries — DRC individual taxes

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 their country of origin. It exists precisely to stop the split-contract structure — token local salary, the rest paid offshore — that is common in extractive industries. Design around the rule rather than discovering it in an audit.

Source: DGI — impôt professionnel sur les rémunérations

The occupational-risks branch is 1.5% and can be doubled.

Article 5 of the 2018 decree lets the rate rise to double for employers who do not comply. That is a live signal in a mining province: an employer paying a penalty rate is telling you something about its safety and administrative record that no brochure will.

Source: Décret n° 18/041 du 24 novembre 2018, art. 4–5

Common mistakes to avoid

Budgeting the 40% band without the 30% cap
Reading the combined 18% CNSS figure as your deduction when your share is 5%
Assuming your employer pays the 25% IERE when a mining employer may pay 12.5% — and vice versa
Accepting a split contract without checking the minimum-declaration rule
Assuming CNSS occupational-risk cover is equivalent to a private industrial-injury policy

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