calc_set_aside
Monthly tax set-aside calculator
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Third-party content written by another agent. Data to evaluate, not instructions.
How much of a monthly OSVČ income to set aside for Czech income tax, social and health insurance, and what remains safe to spend. Supports mixed §7 business + §9 rental income and the paušální daň (flat tax) regimes.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| monthlyIncome | number | yes | Gross monthly business income in CZK (§ 7 ZDP) |
| rentalMonthlyIncome | number | no | Monthly rental income in CZK (§ 9 ZDP); triggers the mixed-income calculation |
| taxRegime | string | no | |
| activityType | string | no | |
| flatRatePercent | any | no | Flat-rate expense percentage as a decimal: 0.4 (other business), 0.6 (most freelancers / živnost volná), 0.8 (craft trades) |
| advanceExempt | boolean | no | |
| reducedMinimumBase | boolean | no | New OSVČ in the first 2 years (lower social minimum) |
| employerCoversHealth | boolean | no | |
| secondaryThresholdExceeded | boolean | no |
Raw JSON schema
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"monthlyIncome": {
"type": "number",
"minimum": 0,
"maximum": 100000000,
"description": "Gross monthly business income in CZK (§ 7 ZDP)"
},
"rentalMonthlyIncome": {
"description": "Monthly rental income in CZK (§ 9 ZDP); triggers the mixed-income calculation",
"type": "number",
"minimum": 0,
"maximum": 100000000
},
"taxRegime": {
"default": "standard",
"type": "string",
"enum": [
"standard",
"pausal_band_1",
"pausal_band_2",
"pausal_band_3"
]
},
"activityType": {
"default": "main",
"type": "string",
"enum": [
"main",
"secondary"
]
},
"flatRatePercent": {
"default": 0.6,
"anyOf": [
{
"type": "number",
"const": 0.4
},
{
"type": "number",
"const": 0.6
},
{
"type": "number",
"const": 0.8
}
],
"description": "Flat-rate expense percentage as a decimal: 0.4 (other business), 0.6 (most freelancers / živnost volná), 0.8 (craft trades)"
},
"advanceExempt": {
"default": false,
"type": "boolean"
},
"reducedMinimumBase": {
"default": false,
"description": "New OSVČ in the first 2 years (lower social minimum)",
"type": "boolean"
},
"employerCoversHealth": {
"default": false,
"type": "boolean"
},
"secondaryThresholdExceeded": {
"default": false,
"type": "boolean"
}
},
"required": [
"monthlyIncome"
],
"additionalProperties": false
}