Forward-Darlehen: Lock In Today's Rates for the Future

A Forward-Darlehen is one of the most powerful financial planning tools available to German mortgage holders. It allows you to lock in today's interest rates for a mortgage that will not start for up to 60 months — giving you certainty about your future financing costs long before your current Zinsbindung expires.

This guide covers everything you need to know about Forward-Darlehen: how they work, what they cost, when they make strategic sense, and the pitfalls to avoid. Whether you are approaching the end of your current fixed period or simply planning ahead, understanding this product is essential for smart mortgage management.

What Is a Forward-Darlehen?

A Forward-Darlehen (forward loan) is a mortgage contract you sign today, at today's rates, but the loan does not start (and payments do not begin) until a specified future date — typically when your current mortgage's Zinsbindung expires. In essence, you are 'pre-ordering' your refinancing at a guaranteed rate.

The bank charges a premium (Aufschlag) for this rate guarantee, which increases with the length of the forward period. This premium compensates the bank for the risk that market rates may be lower when the loan actually starts — in which case they are locked into lending you money at a below-market rate.

Key Terms

Forward-Periode: The time between signing the contract and the loan starting (up to 60 months)
Forward-Aufschlag: The premium added to the base rate for each month of forward period
Stichtag: The date when the Forward-Darlehen starts and your current mortgage ends
Nichtabnahmeentschädigung: Penalty if you refuse to take the Forward-Darlehen after signing

How the Forward Premium Is Calculated

The forward premium (Aufschlag) is the key cost element of a Forward-Darlehen. It is expressed as a percentage per month of forward period and typically ranges from 0.01% to 0.03% per month, depending on the bank and market conditions.

Example Calculations

12-month forward at 0.02%/month: Premium = 0.24% → Base rate 3.3% + 0.24% = Forward rate 3.54%
24-month forward at 0.02%/month: Premium = 0.48% → Base rate 3.3% + 0.48% = Forward rate 3.78%
36-month forward at 0.02%/month: Premium = 0.72% → Base rate 3.3% + 0.72% = Forward rate 4.02%
48-month forward at 0.025%/month: Premium = 1.20% → Base rate 3.3% + 1.20% = Forward rate 4.50%
60-month forward at 0.03%/month: Premium = 1.80% → Base rate 3.3% + 1.80% = Forward rate 5.10%

As these examples show, the premium adds up quickly for longer forward periods. A 60-month Forward-Darlehen at 0.03%/month adds a full 1.80% to your rate — which means it only makes sense if you expect rates to rise by more than 1.80% over the next 5 years.

When Does a Forward-Darlehen Make Strategic Sense?

A Forward-Darlehen is not always the right choice. It makes strategic sense in specific market conditions and personal circumstances:

Favorable Conditions for a Forward-Darlehen

Your Zinsbindung ends within 12-24 months and current rates are historically low or moderate
There are clear signals that rates will rise (ECB hawkish stance, rising inflation, bond yield increases)
Your household budget is tight and any rate increase at refinancing would be financially stressful
You value certainty and peace of mind over potential savings from waiting
The forward premium is reasonable (typically worth it for forward periods under 24 months)

When to Avoid a Forward-Darlehen

Rates are at historically high levels and expected to decline (you would be locking in high rates plus a premium)
Your Zinsbindung doesn't end for more than 36 months (the cumulative premium becomes very expensive)
You plan to sell the property before your Zinsbindung ends
You have strong financial reserves and can absorb a moderate rate increase without difficulty
You are uncertain about your property plans (the Forward-Darlehen is binding)

Forward-Darlehen vs. Prolongation vs. Umschuldung

When your Zinsbindung approaches its end, you have three main refinancing options. Understanding how a Forward-Darlehen compares to the alternatives is crucial:

Prolongation (Stay with Your Current Bank)

Your current bank offers you a new rate for the remaining balance. This is the simplest option — no paperwork, no Grundschuld transfer, no new credit assessment. However, banks know that inertia favors them, so Prolongation offers are often not the most competitive. Always compare before accepting.

Umschuldung (Switch to a New Bank)

Move your mortgage to a different bank offering better terms. The new bank handles most of the paperwork, including the Grundschuld transfer (which costs approximately €300-€500 in notary and land registry fees). The potential rate savings of 0.2-0.5% compared to Prolongation more than offset these costs on any substantial mortgage.

Forward-Darlehen (Lock Rates Early)

Secure today's rates for your future refinancing, whether with your current bank or a new one. The Forward-Darlehen can be combined with either Prolongation or Umschuldung — you are not limited to your current bank. In fact, getting Forward-Darlehen quotes from multiple banks is recommended.

Step-by-Step: How to Arrange a Forward-Darlehen

Determine your refinancing date: Check your mortgage contract for the exact date your Zinsbindung ends
Calculate your expected Restschuld: Estimate the remaining balance on that date (your bank can provide this figure)
Research current rates and forward premiums: Use a broker or online tools to see what Forward-Darlehen rates are available
Get quotes from multiple sources: Ask your current bank, at least one direct bank, and an independent broker
Compare total costs: Calculate the total interest over the new fixed period for each offer, including the forward premium
Consider the timing: The optimal time to lock in is typically 6-18 months before your Zinsbindung ends — short enough for reasonable premiums, long enough for planning
Sign the Forward-Darlehen contract: Once you have selected the best offer, sign the binding contract
On the Stichtag: The Forward-Darlehen automatically replaces your old mortgage. If switching banks, the Grundschuld transfer is coordinated simultaneously

Risks and Pitfalls of Forward-Darlehen

Rate Risk: Locking In at the Wrong Time

The biggest risk is that rates fall after you lock in your Forward-Darlehen. You are then stuck with a higher rate (including the premium) while the market offers better terms. Since Forward-Darlehen are binding, you cannot simply walk away.

The Nichtabnahmeentschädigung

If you try to cancel a Forward-Darlehen after signing, the bank can charge a Nichtabnahmeentschädigung (non-acceptance penalty). This is calculated similarly to a Vorfälligkeitsentschädigung and can amount to several thousand euros, depending on the loan amount and remaining term. Some banks may negotiate cancellation terms, but you should not count on this.

Property Sale Complications

If you need to sell your property before the Forward-Darlehen starts, you may be in a difficult position. You have a binding loan commitment but no property to secure it. This can trigger the Nichtabnahmeentschädigung. Some banks offer portability clauses that allow the Forward-Darlehen to be applied to a new property, but this is not standard.

Forward-Darlehen in the Current Market (2025)

In the current rate environment, with 10-year rates around 3.0-3.5% and the ECB expected to continue easing, the case for Forward-Darlehen is mixed. If you believe rates will decline further, locking in now may not be optimal. However, if your Zinsbindung ends within the next 12-18 months and you cannot afford the risk of rates not declining (or rising), a short Forward-Darlehen provides valuable insurance at a reasonable cost.

The sweet spot for Forward-Darlehen in the current market is a 6-18 month forward period, where the premium adds only 0.12-0.36% to your rate. Beyond 24 months, the premium starts to erode the economic case unless you have a strong conviction that rates will rise significantly.

Tax Considerations

The forward premium on a Forward-Darlehen is part of your interest cost and is therefore tax-deductible for rental investment properties (Kapitalanlage), just like regular mortgage interest. For owner-occupied properties, mortgage interest is not tax-deductible in Germany, so the premium is a pure cost.

Key Takeaways

Forward-Darlehen let you lock in today's rates up to 60 months in advance
The forward premium (0.01-0.03%/month) increases with the length of the forward period
They are binding contracts — you cannot walk away without penalties if rates drop
Best used for forward periods of 6-18 months, where the premium is manageable
Compare Forward-Darlehen offers from multiple banks and brokers
In the current market, useful for borrowers whose Zinsbindung ends within 12-18 months
Not recommended for very long forward periods (36+ months) unless you have strong conviction about rate direction

Frequently Asked Questions

How far in advance can I lock in a Forward-Darlehen?

Most German banks offer Forward-Darlehen with a forward period of up to 60 months (5 years). Some banks limit this to 36 or 48 months. The longer the forward period, the higher the premium (Aufschlag) added to the base rate. Standard premiums range from 0.01% to 0.03% per month of forward period.

Is a Forward-Darlehen binding?

Yes, a Forward-Darlehen is a binding contract. Once signed, you are obligated to take the loan at the agreed rate on the specified date. You cannot simply walk away if rates drop in the meantime without incurring a Nichtabnahmeentschädigung (non-acceptance penalty), which is calculated similarly to a Vorfälligkeitsentschädigung.

Can I combine a Forward-Darlehen with a switch to a different bank?

Yes, and this is actually one of the most common uses. You can arrange a Forward-Darlehen with a new bank to refinance your existing mortgage when the Zinsbindung ends. The new bank offers you their rate plus the forward premium, and the Grundschuld is transferred on the refinancing date.