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Tax simulation tool

How much could your company get through the CIR or the CII?

Simulate your tax credit, identify the expenses to review, and get a personalised PDF report with your next steps.

  • Personalised simulation
  • Analysis of your project
  • Detailed PDF report
Calculate my CIR / CII

Guided questionnaire · about 10 minutes

Indicative simulation. Eligibility and the final amount depend on the work actually carried out and the applicable tax rules.

Capital OS · Simulation report

CIR / CII

Estimate of your potential tax credit

Based on your data

Indicative simulation
  • Project analysis
  • Detailed expense calculation
  • Personalised points to watch
  • Supporting evidence to prepare
  • Next steps

Personalised PDF report

Assumptions, calculation and action plan

Personalised estimate

The calculation applies the tax rules for the fiscal year studied to your expenses: rate, lump sum, caps, subsidies to deduct.

Expenses and points to watch

Each expense is retained, excluded or flagged to confirm, with its justification. The Associate reviews your project and flags sensitive points.

PDF report and next steps

Supporting evidence to prepare, information to complete and an action plan, in a report kept in your workspace.

A simple, quick process

Describe your company and your work to get a simulation suited to your situation.

  1. 1

    Your company

    Sector, size, fiscal year and location.

  2. 2

    Your project

    The problem to solve, the state of the art, the difficulties and the work carried out.

  3. 3

    Your expenses

    Personnel, outsourcing, depreciation and public aid received.

  4. 4

    Your report

    An immediate summary, then your full, detailed PDF report.

Your deliverable

A PDF report useful for taking action

A personalised document to understand the estimate, identify items to check and prepare the next steps — downloadable immediately and kept in your Capital OS workspace.

Start my simulation

Your report includes

  • Executive summary and financial estimate
  • Preliminary diagnosis of the project against CIR / CII criteria
  • Detailed calculation: expenses retained, excluded or to confirm
  • Tax points to watch
  • List of supporting evidence to prepare
  • Action plan, method and official sources

A transparent simulation

The result is based on the information you provide and on the tax rules built in for the fiscal year studied, drawn from the BOFiP and the French research ministry's CIR guide. Some expenses or eligibility conditions may require further verification. The report does not constitute a decision by the tax authority nor a guarantee of reimbursement. To understand the rules, see our full CIR and CII guide (in French).