Calcul Is 2019 2020

Interactive tax tool

Estimate French corporate income tax for 2019 and 2020, compare the impact of the rate transition, and visualize your result instantly. This tool is built for quick planning and side by side decision support.

Assumed model: reduced 15% rate on the first €38,120 when eligible; 2019 standard comparison uses 28% up to €500,000 then 31% above; 2020 applies 28% for most companies, while companies above the turnover threshold continue to see 31% above €500,000 in this comparison model.

Your results

Click calculate to generate side by side tax estimates, effective rates, after tax profit, and the difference between 2019 and 2020.

Expert guide to calcul IS 2019 & 2020

If you are searching for a reliable way to perform a calcul IS 2019 & 2020, you are usually trying to answer one of three practical questions: how much corporate income tax was due under the 2019 rules, how much under the 2020 rules, and what changed between the two years. In French tax terminology, IS refers to impôt sur les sociétés, the corporate income tax paid by companies on taxable profits. Because the French corporate tax reform was phased in over several years, many business owners, CFOs, founders, and advisors still compare these two years to understand historical tax burdens, reconcile accounts, prepare internal reports, or model profitability.

This page is designed as both a calculator and a technical explainer. The calculator above gives you a fast side by side estimate, while the guide below explains how the logic works, what assumptions are used, and where people most often make mistakes. The most important point is simple: between 2019 and 2020, France continued reducing the standard corporate tax burden for many companies. That means a company with the same taxable result could end up paying less in 2020 than in 2019, especially when profit exceeded the upper comparison band and turnover remained below the large company threshold used in common planning models.

Planning note: a good calcul IS 2019 & 2020 does not just multiply profit by one tax rate. It usually requires checking the reduced SME bracket, the standard rate band, and whether the company falls into a larger turnover category.

How the calculator on this page works

The calculator uses a practical comparison model widely used for quick planning. It starts with taxable profit. If the company is eligible for the reduced SME rate, the first €38,120 of profit is taxed at 15%. Once that reduced slice is exhausted, the remainder is taxed under the standard bands for the selected year comparison. For 2019, the common comparison logic used here is 28% up to €500,000 of taxable profit, then 31% above €500,000. For 2020, the tool applies 28% for most companies and keeps the higher 31% layer above €500,000 when the turnover threshold indicates a large company profile in this simplified model.

This matters because a one point or three point tax difference on higher profit levels can materially change cash flow, dividend strategy, and year end accruals. Even a business that is not preparing an official tax return may still need this comparison for budgeting, valuation, due diligence, and post acquisition review.

• Input 1: taxable profit before IS.
• Input 2: annual turnover, used to test the large company assumption for 2020.
• Input 3: whether the company is eligible for the reduced 15% SME bracket.
• Output: estimated IS for 2019, estimated IS for 2020, effective tax rates, after tax profit, and the savings or extra cost between the two years.

Key thresholds used in calcul IS 2019 & 2020

To understand the result, it helps to separate the calculation into thresholds rather than years alone. The reduced SME rate applies only under qualifying conditions. The standard rate is then applied across the remaining profit. The transition period between 2019 and 2020 is particularly interesting because businesses above €500,000 of taxable profit can show a visible gap between the two years, while smaller profit levels often produce a much smaller difference or no difference at all.

Comparison item	2019	2020
Reduced SME bracket	15% on the first €38,120 when eligible	15% on the first €38,120 when eligible
Standard comparison rate up to €500,000	28%	28%
Rate above €500,000 in this model	31%	28% for most companies, 31% for large turnover profiles
Turnover threshold used in the calculator	Displayed for comparison purposes	€250 million threshold used in this planning model

These figures are the backbone of the calculator. If your company earns under €38,120 and qualifies for the reduced bracket, your effective rate can be much lower than the headline standard rate. If your company earns far more than €500,000, the upper band becomes a major planning issue. This is exactly why a proper calcul IS 2019 & 2020 should always be layered instead of flat.

Worked examples with real thresholds

The best way to understand the reform effect is to look at concrete examples. The table below uses the official thresholds and rates represented by this calculator. It assumes turnover below €250 million and eligibility for the 15% SME bracket, which means 2020 may produce a lower tax burden than 2019 when profit rises above €500,000.

Taxable profit	2019 estimated IS	2020 estimated IS	Difference	Comment
€50,000	€9,044.40	€9,044.40	€0.00	No change because profit does not reach the upper comparison band.
€100,000	€23,044.40	€23,044.40	€0.00	The reduced bracket helps, but there is still no upper band effect.
€500,000	€135,044.40	€135,044.40	€0.00	The full amount remains inside the 28% standard comparison band after the reduced slice.
€1,000,000	€290,044.40	€275,044.40	€15,000.00 lower in 2020	The profit above €500,000 drives the visible gap between the two years.

This example is useful because it shows a common misunderstanding. Many people assume that if the headline rate changed, every profitable company immediately pays less. In practice, the savings are concentrated where the taxable result reaches the affected band. A company at €100,000 profit and a company at €1,000,000 profit do not experience the same impact, even if both are profitable and both qualify for the reduced first slice.

Step by step method for a correct IS calculation

1. Start from taxable profit, not accounting revenue. The tax base is profit after tax adjustments, not gross sales or turnover.
2. Check SME eligibility carefully. The reduced 15% rate is not automatic for every company. It depends on specific conditions.
3. Apply the reduced bracket first. If eligible, the first €38,120 is taxed at 15%.
4. Apply the standard rate to the next layer of profit. In the comparison model above, 28% applies to the standard tranche.
5. Test the upper band and turnover profile. For 2019 and in large company 2020 scenarios, the 31% layer can still apply above €500,000.
6. Compute effective rate and after tax profit. These management indicators are often more useful than the raw tax amount alone.

Following this order reduces mistakes. The biggest error is skipping directly to one headline rate. The second most common error is forgetting that the reduced bracket does not apply to all profit, only to the first eligible tranche. The third is overlooking turnover based distinctions when comparing historical years.

Why businesses still compare 2019 and 2020 today

Even though these are historical years, the comparison remains relevant in several professional settings. During an audit, merger, acquisition, funding round, or shareholder review, analysts often rebuild prior year profitability. A lender may ask why cash tax changed while sales remained stable. A buyer may want to normalize earnings by understanding whether the change came from operations or from tax reform. An entrepreneur may simply want to estimate whether 2020 profitability improved because of better margins or because the tax burden became lighter.

That is why the phrase calcul IS 2019 & 2020 still receives interest. It is not only a filing task. It is also a management analysis task. If you can split the tax effect from the operational effect, your reporting becomes more accurate, and your strategic decisions become more grounded.

• Reconstructing historical free cash flow
• Preparing investor materials
• Analyzing dividend capacity
• Reviewing deferred tax movements
• Testing profitability scenarios across past fiscal years

Common errors to avoid

Many online pages oversimplify the French corporate tax calculation. Here are the mistakes that most often distort a calcul IS 2019 & 2020:

• Using turnover as the tax base. Turnover helps test certain thresholds, but IS is calculated on taxable profit.
• Ignoring eligibility rules for the 15% tranche. If the company does not qualify, the reduced bracket should not be applied.
• Applying one flat rate to all profit. Historical IS calculations are often band based.
• Forgetting year specific reform effects. 2019 and 2020 may produce different results even with identical profits.
• Confusing a planning calculator with legal advice. Official filing should always be validated against the precise text applicable to the company situation.

A clean workflow is to use a calculator like this for a first pass, then validate the assumptions with your accountant or tax advisor before filing or booking a final provision. This is especially important when group structures, special regimes, integration rules, or non standard fiscal years are involved.

How to interpret the chart

The chart above translates the two year comparison into a visual format. If the 2020 bar is lower than the 2019 bar, the company pays less tax under the 2020 assumptions. The difference between the bars becomes more visible as profits increase beyond the upper comparison threshold. For management teams, this kind of chart is useful because it communicates quickly to non specialists. A board member may not want to inspect every tax band, but can still understand the cash impact when it is shown graphically.

Do not stop at the chart alone, however. Always read the effective tax rate and after tax profit. Sometimes the absolute tax saving looks large, but as a percentage of profit it may be modest. In other cases, a small rate change can still create meaningful extra cash if profitability is strong.

Authoritative reference links

For broader corporate tax concepts and official style reference material, consult: IRS corporate tax resources, Congressional Research Service report on corporate taxation, and Cornell Law School overview of corporate tax.

These sources are not substitutes for French tax law, but they are useful for understanding corporate tax mechanics, policy comparisons, and the distinction between taxable income, statutory rates, and effective burden. For a French company, the safest approach is to use this calculator for orientation, then confirm the exact legal application with current professional documentation or a qualified advisor.

Final takeaway

A proper calcul IS 2019 & 2020 is a structured exercise. You need taxable profit, you need to know whether the reduced SME bracket applies, and you need to understand whether the upper standard band changes between the two years under your company profile. Once you map those variables correctly, the comparison becomes straightforward. The calculator on this page turns that logic into a fast, visual estimate, while the guide helps you interpret the result intelligently.

If you are comparing historical performance, the most useful outputs are usually not just the tax amount, but also the effective rate, the after tax profit, and the year to year delta. Those three figures tell you whether the difference is meaningful enough to affect cash planning, distributions, valuation, or management reporting. Use the calculator above, test several profit levels, and you will quickly see where the 2019 versus 2020 gap starts to matter.