Test a payment against real household cash flow

Start with reliable income

Use income you can reasonably expect, after mandatory deductions where relevant. Treat irregular income cautiously.

Protect essential spending

List housing, food, transport, utilities, health costs, dependants, taxes, and existing debts before adding a new payment.

Leave a safety margin

Test a lower-income or higher-expense month and consider currency or variable-rate risk. If the plan only works in a perfect month, the payment may be too tight.

This is general education, not financial, legal, tax, or credit advice. Check official rules in your market.