Accountant for self-employed nurses

A self-employed nurse (IDEL — Infirmier Diplômé d'État Libéral) operating under the BNC regime needs a specialist accountant because the activity blends atypical flows — fee rebates, mileage allowances, replacements, CARPIMKO contributions — that make a real read of income difficult without rigorous tracking. The 2035 return must reflect exactly what is collected, spent and provisioned, otherwise the tax result drifts away from real cash.

Hayot Expertise supports IDELs across their accounting, tax and social-security obligations: 2035 return, optimisation of travel expenses, management of CARPIMKO contributions, and structuring as a group practice or SCM (cost-sharing partnership).

Micro-BNC applies up to €83,600 of receipts (2026 threshold) with a flat 34% deduction. The 2035 real regime becomes more favourable as soon as real expenses exceed 34% of receipts.

Worked example: an IDEL with €82,000 of receipts and €34,000 of real expenses (41.5%):

• Micro-BNC → taxable profit = €82,000 × 66% = €54,120
• Real 2035 regime → taxable profit = €82,000 − €34,000 = €48,000
• Saving: €6,120 of taxable base, roughly €2,000-€2,500 less in tax and social contributions

Rebates are the most frequent error in IDEL returns:

• When you replace a principal: declare only the rebate received (line 1), not the principal's gross fees.
• When you host a locum: declare the gross fees collected as revenue (line 1) and the rebate paid as a deduction (line 3).

Mixing these flows artificially inflates declared turnover, increases social contributions and can trigger a tax audit.

CARPIMKO is the pension fund for paramedical liberal practitioners. In 2026:

Total to provision: €400-500/month depending on income level. Contributions are called on year N−1 with a true-up in N: if your income has risen sharply, the January N+1 true-up can exceed €3,000-5,000.

Example: an IDEL covering 20,000 professional km/year with a 5 CV vehicle:

• Mileage scale: 20,000 × €0.636 = €12,720 deductible
• Typical real costs (fuel + insurance + maintenance + depreciation) ≈ €8,000-€9,000 → the scale wins here

The choice is binding for the full financial year and must be supported by a logbook or GPS record.

The SCM (Société Civile de Moyens) is the standard structure as soon as two IDELs share a practice on a sustained basis. It pools rent, secretariat and equipment without mixing professional revenue. Each partner remains taxed under BNC on their own fees.

Recommendation: set up an SCM as soon as shared costs exceed €500/month and the collaboration has lasted more than 6 months. An oral arrangement without an SCM exposes both partners to requalification as a de facto partnership.

Profile: Sophie M., self-employed nurse, rural area (35 km around her practice). Year-N receipts: €92,000. Contribution provisions: €800/month aligned to N−1 (income of €68,000). Mileage declared: 18,000 km.

Issues identified by Hayot Expertise:

1. CARPIMKO + URSSAF provisions understated by €3,800/year vs real N income
2. Logbook supported 24,000 km but only 18,000 km were declared
3. No Madelin provident contract subscribed despite income allowing a €2,400/year deduction

Actions taken:

1. Mileage corrected to 24,000 km → 24,000 × €0.636 = €15,264 (vs €11,448 previously) → gain of €3,816 of taxable base
2. CARPIMKO provisions raised to €1,200/month to cover the N+1 true-up
3. Madelin provident contract subscribed: €2,400/year deducted from BNC → ~€1,000 saving on IR + contributions
4. Monthly dashboard set up: receipts, mileage, provisions, estimated take-home

Result year N+1: no surprise true-up, estimated monthly take-home raised to €3,300 net (vs €2,700 without tracking), total tax saving: €4,800 for the year.

Mistake 1 — Not keeping a mileage logbook. Without supporting evidence, the full mileage deduction can be rejected on audit. A monthly logbook is enough.

Mistake 2 — Declaring gross fees when replacing. Only the rebate received is your revenue. Declaring the principal's gross fees inflates turnover and social contributions.

Mistake 3 — Not adjusting CARPIMKO provisions during the year. If your income rises sharply versus N−1, recalculate the provisions from July to avoid a painful January true-up.

Mistake 4 — Forgetting the Madelin provident scheme. For an IDEL on €90,000 of receipts, deducting €2,400/year of Madelin provident saves about €1,000 in tax and contributions — frequently missed without specialist advice.

We support IDELs across the full lifecycle: 2035 return, defensible mileage method, calibrated CARPIMKO provisioning, replacement and rebate accounting, group-practice structuring, and a clear monthly read of real take-home cash. Free quote within 24 hours, with a first diagnostic meeting on the house.