Refinancing Calculator
Fast, accurate and free online refinansowania calculator tool running directly in your browser.
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Refinancing Calculator
Analysis of the profitability of changing a bank, taking into account Polish realities: commission refunds, court costs, commission and cross-selling.
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Find out whether loan transfer will reimburse the costs of the survey and commission.
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Refinancing sounds like "changing the bank and lower installments", but in practice it is a small financial project: startup costs, court fees, appraisal, sometimes a commission for early repayment, and additional products (account/insurance) that can eat up half of the profit. This calculator calculates it in a human way: it shows the monthly effect in your pocket, the real cost of starting after returns and the moment when you break even.
Refinancing: when it makes sense and when it's a trap
The most common mistake is to look only at the interest rate. Yes, the difference between 8.50% and 7.10% is impressive, but refinancing wins or loses on "little things": one-off entry costs and monthly fees for products that the bank likes to add to the margin. This calculator collects it in one place and turns it into a specific answer: whether you gain net, how much you gain and after what time.
If you plan to stay in your apartment for a long time, even a small monthly saving can add up to a solid amount. However, if you want to sell the property in 12-18 months or have high startup costs, you can "work off" refinancing for a long time. Therefore, two results are key: monthly savings and payback time (break-even).
What does this calculator calculate in the background (no magic)
You are comparing two scenarios: the current loan and the new offer. The calculator calculates the annuity installment (equal), sums the costs of installments over the entire period, adds/subtracts additional costs and adds refinancing costs (commissions, report, court, possible early repayment fee). At the end, you get the net difference and a profitability assessment.
Important: you can include monthly product costs (account, card, insurance) in the calculator. They are the ones who most often make a "super offer with a low margin" look average in real cash flow.
A Polish detail that changes the game: refund (Article 49)
If you paid a commission or insurance in advance with the old loan, in many situations you are entitled to a proportional refund for the unused period. The calculator allows you to simulate this: you enter the amount paid at the beginning and the original loan period, and the tool calculates the approximate return for the remaining months.
The effect is simple: refinancing may have a lower "barrier to entry" than you think. Sometimes the refund can cover a significant part of the startup costs, and in extreme cases it can give a positive balance at the start.
How to use a step-by-step refinance calculator
You don't have to have perfect contract data. To start, a reasonable approximation of the balance, number of installments and interest rate is enough. If the result is "on the limit", only then is it worth working out the details (costs of the survey, court, commissions and additional products).
- Enter the balance to be repaid (principal)– the amount that actually remains to be paid. This is the most important number in the entire calculator.
- Enter how many installments are left– number of months until the end of the current contract. If you plan to overpay anyway, use the result as a reference point.
- Enter the current interest rate– the one you have today (not from last year). If you have variables, look at your current schedule or banking.
- Complete the parameters of the new offer– new interest rate and new period in months. This also allows you to check the scenario: "I leave a similar installment, but I shorten the time."
- PRO Options (recommended)– enable and complete startup costs and returns if you want a result closer to reality.
- Click "Calculate profitability"- you get monthly savings, break-even, start-up balance, total difference and score.
Refinancing costs in Poland: what should you enter so as not to deceive yourself
Refinancing is not only an installment. There are usually one-off costs (initial costs) and monthly costs (additional products). This calculator has it separated so it's easy to see what exactly is eating up your profit.
Bank commission(percentage or fixed amount) – sometimes 0, sometimes real money. It's worth entering both options if you know.
Estimate– a typical cost that is not visible in offer advertisements. It is useful for a realistic entry threshold.
Mortgage entry / fees- often "small", but it is still a starting cost that affects break-even.
Early repayment fee- for some people 0%, for others it depends on the time of disbursement and the type of loan.
Additional products– account, card, insurance. It's easiest to lose sight of the real cost here, because "it's only a few zlotys."
Reimbursement of costs (Article 49)– if you paid something in advance in the old loan, this refund can actually reduce the start-up cost.
Mini-checklist: what to prepare before comparing offers
- Current principal balance and number of installments remaining (from banking or schedule).
- Today's interest rate (not "approximately from memory").
- Parameters of the new offer: interest rate and period you are considering.
- Start-up costs: commission, commission, court and possible early repayment fee.
- Monthly product costs: what you pay now and what you will pay after the change.
- If there was "something in advance": commission/insurance - amount and original loan period (to be refunded).
| Element | What does it mean in practice | Hint for entering |
|---|---|---|
| Bank commission (%) | One-off cost calculated from the balance, increases the entry threshold. | If the offer is "0%", enter 0. If you are not sure, test 0% and e.g. 1-2%. |
| Fixed commission (PLN) | Fixed fee, regardless of the loan amount. | Enter when the bank provides a specific amount instead of a percentage (or next to the percentage). |
| Appraisal report | Valuation of real estate for a new bank. | If you don't know, enter a value in the middle of the typical range and check the sensitivity of the result. |
| Court / mortgage | Fees related to the entry/amendment of a mortgage. | Treat it as a "hard" startup cost - it affects break-even, even if it is relatively small. |
| Early Repayment Fee (%) | This can show up on an old loan and hurt when you have a large balance. | If you are not sure, do two passes: 0% and the value from the contract/regulations. |
| Additional products (monthly) | Cost of maintaining an account/card/insurance, often a condition for a lower margin. | Enter real amounts "here and now": how much you pay currently and how much you will pay after the change. |
| Reimbursement of costs (Article 49) | Proportional refund of fees paid at the start for the unused period. | Enter the amount paid in advance and the original period. The calculator will estimate the return for the remaining months. |
How to read the results: the most important numbers and what they mean
After the calculation, you will see several metrics. If you only have time for two, look at "month in your pocket" and "payback time." The rest helps to understand why the result was the way it was.
Monthly in your pocket
This is the difference between the total cost "currently" and "in the new bank" on a monthly basis (installment + additional products). If the number is clearly positive, refinancing gives breathing room to the budget. If it is close to zero, the whole game is about startup costs and the time horizon over which you plan to repay the loan.
In practice: you can have a lower installment but a higher cost of additional products. The calculator will show whether you end up paying less or whether you just transferred the cost from installment to an "account with condition".
Payback time (break-even)
This is the number of months needed for the monthly savings to "make up" the cost of starting the refinancing (after taking into account returns). If the break-even is 0, it means that the returns have covered the startup costs and you profit immediately. If it is "never", it is a signal that the monthly savings are too small or the startup costs are too high.
This is the best common sense filter: if you plan to sell the property sooner than the break-even, refinancing may be a pure loss.
Total difference and "opening balance"
The "total difference" tells you how much you gain (or lose) over the entire period being compared, after adding startup and monthly costs. However, the opening balance breaks down costs and returns: how much you pay at the start and how much comes back from the old bank. This helps to understand why the turnaround time was the way it was.
Scenarios Where a Calculator Is Really Useful
Refinancing isn't just about "switching banks." Sometimes it is a tool to shorten the repayment period, sometimes a way to regain control over the budget, and sometimes a test: whether an offer with a low interest rate is actually cheap.
You want to lower your monthly burden and leave yourself a buffer. The calculator will show real savings after taking into account additional products.
You have a stable budget, but you want to close the loan faster. You check the new period (e.g. 240 instead of 300 months) and see how many years you can "recover".
The bank tempts you with a lower margin, but forces you to maintain the account and insurance. You enter the costs and check whether the conditions do not eat into the profit.
Did you pay commission/insurance in advance? The calculator will show whether the refund can realistically finance refinancing.
If you like hard decisions: refinancing makes sense when (1) you have noticeable monthly savings, (2) startup costs are under control or are offset by repayments, and (3) you know you're staying in the loan beyond the break-even. It's not magic - it's a simple flow comparison.
Go to the calculator and calculate profitabilityFAQ – frequently asked questions
What is the difference between "monthly savings" and "total difference"?
Monthly savings is the effect in the current budget: how much less (or more) you pay every month after changing the bank, counting the installment and the monthly costs of additional products. The total difference takes a broader view: it adds up all the months and adds the refinancing startup costs (less any refunds). You may have good monthly savings, but if the start-up costs are very high, the "on paper" profit will only appear after a long time.
What does break-even mean and how to interpret it if I plan to sell my apartment?
Break-even (payback time) is the number of months after which monthly savings will equal the cost of starting the refinancing. If you plan to sell the apartment or repay the loan faster than the break-even amount, refinancing may be unprofitable because you will not have time to "make up" for the entry costs. In such a situation, the calculator acts as an emergency brake: instead of focusing on lower interest rates, you look at the real horizon.
How does the inclusion of reimbursement (Article 49) in the calculator work?
If you paid any costs in advance in the old loan (e.g. commission or insurance), the refund is calculated in proportion to the unused period. You enter the amount paid at the start and the original loan period in months, and the calculator estimates the portion for the remaining months. This is an approximation, but very useful for a quick assessment: whether the return actually lowers the entry threshold and shortens the turnaround time.
Is it worth refinancing if the new bank requires an account and insurance?
It depends - and that's why the calculator has fields for the monthly costs of additional products. If new requirements cost you a significant amount each month, they may eat up some of your savings from a lower payment. On the other hand, sometimes old products are more expensive or you keep them anyway. The fairest approach is to compare the "monthly total" (installment + extras) in both variants and only then look at the interest rate.
What is the APR/APRC in Performance and why is it just an "estimate"?
The APR (APRC) is a metric that attempts to describe the total cost of a loan at one percent per year. The problem with refinancing is that the details of the offer can be very extensive: insurance, commissions, required products, additional fees. The calculator calculates the approximate APR for the switching scenario, based on the amount, startup costs and monthly payments. Treat this as a guide for comparison, not as a value identical to the table in the bank's documents.
What if I want to shorten the loan period but not increase the installment?
This is a common, reasonable goal: pay similarly every month, but close the loan faster. In practice, you test different "new period (month)" values in the calculator and check how the installment and "years saved" change. If shortening the period increases the installment slightly and significantly reduces the amount of interest, you can consider it a win even if the "monthly money in your pocket" does not increase.
Why does the schedule only show 12 months and is that enough?
The schedule in the preview is intended to give a quick insight into the structure of installments: how much goes to interest, how much to capital, how much the balance decreases. The first 12 months are usually enough to see the trend and compare the repayment dynamics in the new variant. If you need a full schedule, treat the calculator as a profitability analysis and offer filter, and check the detailed repayment plan using data from the bank.
Finally: a simple rule that saves your wallet
Before you start transferring documents between banks, do two runs in the calculator: (1) the "optimistic" variant with minimal costs and (2) the "realistic" variant with startup costs and additional products. If the outcome is good in both cases, refinancing makes sense. If only the ideal version is profitable, it is a sign that the decision is at the limit and it is worth refining the data or negotiating the terms.
Do the math again with PRO costs