Examples

const freelancer = simulateIndependentWorker({
income: 2500,
incomeFrequency: 'month',
nrDaysOff: 20,
expenses: 1800,
maxExpensesTax: 20,
});

console.log('=== Monthly Freelancer ===');
console.log(`Gross (year): €${freelancer.grossIncome.year.toFixed(2)}`);
console.log(`Taxable income: €${freelancer.taxableIncome.toFixed(2)}`);
console.log(`Expenses needed: €${freelancer.expensesNeeded.toFixed(2)}`);
console.log(`Net (month): €${freelancer.netIncome.month.toFixed(2)}`);

const standard = simulateIndependentWorker({
income: 45000,
benefitsOfYouthIrs: true,
yearOfYouthIrs: 2,
});

const rnh = simulateIndependentWorker({
income: 45000,
rnh: true,
rnhTax: 0.20,
});

console.log('=== Youth IRS vs. RNH ===');
console.log(`Standard IRS net (year): €${standard.netIncome.year.toFixed(2)}`);
console.log(`RNH net (year): €${rnh.netIncome.year.toFixed(2)}`);
console.log(`Youth IRS discount: €${standard.youthIrsDiscount.toFixed(2)}`);

const now = new Date();

const firstYear = simulateIndependentWorker({
income: 28000,
dateOfOpeningActivity: new Date(now.getFullYear(), 0, 15), // same year -> first financial year
});

const older = simulateIndependentWorker({
income: 28000,
dateOfOpeningActivity: new Date(now.getFullYear() - 2, 0, 15),
});

console.log('=== SS Exemption Comparison ===');
console.log(`First 12 months SS: €${firstYear.ssPay.year.toFixed(2)}`);
console.log(`After exemption SS: €${older.ssPay.year.toFixed(2)}`);

const variable = simulateIndependentWorker({
income: [1200, 1800, 2400, 900, 1500, 3000, 2800, 3200, 1600, 1100, 2900, 4200],
expenses: 3000,
});

console.log('=== Variable Income ===');
console.log(`Total Gross (year): €${variable.grossIncome.year.toFixed(2)}`);
console.log(`Estimated SS (year): €${variable.ssPay.year.toFixed(2)}`);
console.log(`Net Income (year): €${variable.netIncome.year.toFixed(2)}`);
console.log('Monthly SS breakdown:');
variable.monthlyBreakdown.forEach(m => {
console.log(`  ${m.month}: SS €${m.ssPay.toFixed(2)}, net €${m.netIncome.toFixed(2)}`);
});