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Qotien PER Tax Gain Calculator
x402
Qotien PER Tax Gain Calculator is a paid API for AI agents from app.qotien.fr, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).
Calculates the income tax saving (gain fiscal) from a deductible PER (Plan d'Épargne Retraite) contribution for a French household
Price / call$0.25
Success—
StatusUnknown
How this service works
Simulateur IFI, PER, IR et retraite (32 régimes). Logiciel CGP : bilan patrimonial, déclaration 2042, LMNP. Chiffres sourcés Légifrance et BOFiP. 14 jours d'essai.
Output
A JSON object containing: a boolean success flag, the computed tax gain in EUR (value field), a human-readable label, the confidence level of the result (fiable/estime/partiel etc.), the list of legal sources used (CGI articles, BOFiP references), the fiscal year applied, a disclaimer warning, and the capability and domain identifiers.
Example use cases
Self-employed worker optimizing annual PER contribution
“I'm self-employed, married with 2 kids (2.5 parts), my RFR is €95,000 before any PER contribution, and I'm planning to put €12,000 into my PER — how much would that save me on my French income tax?”
Single saver comparing PER contribution scenarios
“I'm single with no dependants, 1 part, and an RFR of €45,000. Can you tell me the tax gain if I contribute €3,000 to my PER versus €6,000 — start with €3,000 please?”
Financial advisor calculating PER benefit for a client
“My client is Pacsé with 1.5 parts, one dependant, an RFR of €120,000 and €10,000 in flat-tax financial income. If they make a €15,000 PER versement, what's the estimated impôt sur le revenu reduction?”
Technical details
Endpoint
POSThttps://app.qotien.fr/api/fiscal/v1/calc/per_gainWhen to prefer
Choose this endpoint when you need a legally-sourced, auditable computation of the French income-tax benefit from a PER contribution, especially in a CGP (financial advisor) workflow or automated fiscal planning context. It is preferable to generic tax calculators because it cites Légifrance and BOFiP, handles the French family quotient (parts) correctly, and integrates CDHR rules for dependants and flat-tax financial income.
Side effects
- Missing required fields (revenu_fiscal_reference or versement) → ok:false with error description
- Negative or out-of-range values for income or contribution → validation error
- Invalid situation familiale enum value → schema validation failure
- RFR below deduction floor resulting in zero gain → ok:true with value:0
- Service unavailable or payment failure → HTTP 402/500 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| parts | number | Parts de quotient familial. |
| situation | string | Situation familiale. |
| versement | number | Versement PER déductible envisagé (€). |
| nb_personnes_charge | number | Personnes à charge (majoration CDHR). |
| revenus_financiers_pfu | number | Revenus financiers au PFU inclus dans le RFR (€) — pour le calcul CDHR. |
| revenu_fiscal_reference | number | RFR du foyer AVANT versement (€). |
Output
Schema · Response
{
"type": "json",
"schema": {
"type": "object",
"required": [
"ok",
"domaine",
"capability",
"result",
"confiance",
"sources",
"millesime_fiscal"
],
"properties": {
"ok": {
"type": "boolean",
"description": "true = succès ; false = erreur (champ \"error\" présent à la place de result)."
},
"result": {
"type": "object",
"properties": {
"unit": {
"type": "string",
"description": "Unité de value (EUR, PERCENT, RATE…)."
},
"label": {
"type": "string",
"description": "Libellé lisible du résultat."
},
"value": {
"type": "number",
"description": "Valeur principale (quand le résultat est scalaire)."
},
"confiance": {
"enum": [
"fiable",
"estime",
"partiel",
"non_calculable",
"sourcee",
"variable"
],
"type": "string",
"description": "Confiance propre au résultat retraite (prime sur la confiance de capacité)."
}
},
"description": "Résultat. Contient typiquement { value:number, unit:string, label:string } ; les outils retraite ajoutent confiance, fourchette, et le détail par régime."
},
"domaine": {
"enum": [
"fiscal",
"retraite",
"referentiel",
"qotien"
],
"type": "string",
"description": "Domaine de la capacité."
},
"sources": {
"type": "array",
"items": {
"type": "string"
},
"description": "Sources primaires/légales du calcul."
},
"confiance": {
"enum": [
"fiable",
"estime",
"partiel",
"non_calculable",
"sourcee",
"variable"
],
"type": "string",
"description": "Niveau de confiance de CE résultat (fiscal = fiable ; retraite = variable)."
},
"capability": {
"type": "string",
"description": "Nom de la capacité appelée."
},
"referentiel": {
"type": "string",
"description": "Version du référentiel sourcé utilisé."
},
"annee_revenus": {
"type": "number",
"description": "Année des revenus concernés."
},
"avertissement": {
"type": "string",
"description": "Avertissement d'usage (résultat brut, pas un conseil personnalisé)."
},
"millesime_fiscal": {
"type": "string",
"description": "Millésime fiscal (année des barèmes appliqués)."
}
}
},
"example": {
"ok": true,
"result": {
"unit": "EUR",
"label": "Gain d'impôt d'un versement PER",
"value": 0
},
"domaine": "fiscal",
"sources": [
"CGI art. 163 quatervicies (déductibilité PER)",
"CGI art. 197 (barème/décote)",
"CGI art. 223 sexies (CEHR)",
"CGI art. 224 (CDHR)"
],
"confiance": "fiable",
"capability": "per_gain",
"referentiel": "references_officielles.json v0.8.6",
"annee_revenus": 2025,
"millesime_fiscal": "2026"
}
}Tags
x402
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