Creditworthiness — What it is and how to calculate it

Quick Answer

Creditworthiness is an assessment made by a bank determining the maximum loan amount you can repay while maintaining financial security. It is calculated roughly as (net income − living costs − obligation installments) × factor × loan period, and is not fixed — it changes with income, expenses, existing obligations, and rates. Positive factors include high net income, a permanent employment contract, and positive BIK history; credit cards and consumer installments reduce it. Crucially, it is the maximum the bank will lend, not the amount you should borrow — keep installments below 25-30% of net income for a resilient budget.

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Definition

Creditworthiness is an assessment made by a bank determining the maximum loan amount you can repay while maintaining financial security. It's not a fixed value — it changes based on your income, expenses, existing obligations, and macroeconomic parameters.

What affects creditworthiness

Positive factors

• High net income — The more you earn, the higher the creditworthiness
• Permanent employment contract — Banks treat it as the most stable
• No other obligations — No installments, credit cards, limits
• Down payment > 20% — Reduces risk for the bank
• Positive BIK history — Timely payments on previous obligations
• Long employment tenure — Employment stability

Negative factors

• Credit cards — Even an unused limit reduces creditworthiness
• Consumer installments — Leasing, phone installments, loans
• Contract work/B2B — Banks apply a correction factor (60-80% of income)
• Short employment tenure — Less than 6-12 months with current employer
• Many dependents
• Negative BIK entries

How banks calculate creditworthiness

Simplified formula:

Creditworthiness = (Net income − Living costs − Obligation installments) × Factor × Loan period

Banks use their own scoring models, but key elements are:

1. Net income (after taxes and ZUS)
2. Living costs (banks have minimum rates, e.g., 1,500 PLN/person)
3. Existing installments and credit card limits
4. Safety buffer — Bank assumes interest rate increase by 2-5 percentage points

How to increase creditworthiness

1. Close credit cards — Even an unused limit is an obligation
2. Pay off small installments — Phone installments, consumer loans
3. Increase income — Raise, bonus, additional income source
4. Extend loan period — 30 years instead of 25 (lower installment = higher creditworthiness)
5. Take a joint loan — Two incomes = higher creditworthiness
6. Switch to employment contract — If possible, 6+ months before application

Creditworthiness vs. actual possibilities

Important: Creditworthiness is the maximum amount the bank will lend you — not the amount you should borrow. Loan installment shouldn't exceed 25-30% of net income. The bank will lend you more, but you should borrow less.

How Freenance can help

Freenance gives you a real picture of your finances before visiting the bank:

• Accurate income and expenses — Not estimates, but hard data
• List of obligations — All installments and limits in one place
• Installment simulation vs budget — Whether you can afford the loan stress-free
• Runway — How many months you'd survive if you lost income

👉 Know your financial situation with Freenance — freenance.io

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FAQ

What is creditworthiness in practical terms?

Creditworthiness is the bank's estimate of how large a loan you can service while keeping a safe financial buffer. It is not a fixed personal number but a calculation that depends on the lender's policy, the product, and the current interest rate environment.

How is debt-to-income ratio used by Polish banks?

Polish banks compare total monthly debt service with net household income, typically requiring that all obligations stay well below a regulatory and internal cap. KNF Recommendation S also requires lenders to apply a stress test by assuming a higher interest rate than the one currently offered.

Why do credit card limits reduce creditworthiness even if unused?

Banks must assume that any granted limit could be fully drawn at any time, so the maximum theoretical payment is included in the affordability calculation. Closing unused cards and overdrafts before applying for a mortgage usually increases the amount you can borrow.

Does a B2B or civil-law contract lower creditworthiness?

Most banks treat self-employment and civil-law income as less stable than a permanent employment contract, often applying a correction factor or requiring a longer track record. The exact treatment varies between lenders, so comparing offers is especially important for non-standard income.

What is the difference between creditworthiness and the amount I should borrow?

Creditworthiness is the maximum the bank is willing to lend based on its rules, not a recommendation. A common conservative guideline is to keep the loan instalment below roughly a quarter to a third of net income so the budget remains resilient to shocks.