Choosing Your Tilgungssatz: Finding the Right Repayment Rate

The Tilgungssatz (initial repayment rate) is one of the most impactful decisions in your German mortgage, yet it receives far less attention than the interest rate. While borrowers obsess over a 0.1% difference in interest rates, the difference between 2% and 3% Tilgung can save over €40,000 in total interest and shorten your loan by 7+ years. This guide helps you find the Tilgungssatz that optimally balances monthly affordability with long-term cost efficiency.

What Is the Tilgungssatz and How Does It Work?

The Tilgungssatz (or anfängliche Tilgung) is the initial rate at which you repay the principal of your mortgage loan, expressed as a percentage of the original loan amount per year. Together with the Sollzins (interest rate), it determines your monthly payment.

The word 'anfänglich' (initial) is important: in an Annuitätendarlehen, the Tilgung rate automatically increases over time as the interest portion of your payment decreases. Your monthly payment stays the same, but more of it goes toward principal repayment as the loan progresses. So a '2% Tilgung' does not mean you repay 2% every year throughout the loan — 2% is just the starting rate in the first year.

The Mechanics: Interest + Tilgung = Annuität

Your annual payment (Annuität) equals the loan amount multiplied by the sum of the interest rate and the initial Tilgung rate. For a €300,000 loan at 3.5% interest with 2% initial Tilgung: Annuität = €300,000 × (3.5% + 2%) = €300,000 × 5.5% = €16,500 per year, or €1,375 per month.

In the first year, the split is approximately: €10,500 interest (3.5% × €300,000) and €6,000 principal repayment (2% × €300,000). By year 10, the split has shifted: approximately €8,800 interest and €7,700 principal repayment — same total payment, but more goes toward actually owning your property.

Impact of Different Tilgungssätze: A Detailed Comparison

The following comparison uses a €300,000 loan at 3.5% interest to illustrate the dramatic impact of different Tilgungssätze:

1% Tilgung (Minimum)

Monthly payment: €1,125
Full repayment period: Approximately 46 years
Total interest paid over full term: Approximately €322,000
Restschuld after 10 years: €268,000 (only €32,000 repaid)
Verdict: Minimizes monthly outlay but maximizes total cost. Only acceptable if cash flow is extremely tight

2% Tilgung (Standard)

Monthly payment: €1,375
Full repayment period: Approximately 30 years
Total interest paid over full term: Approximately €196,000
Restschuld after 10 years: €228,000 (€72,000 repaid)
Verdict: The most common choice. Reasonable balance of affordability and cost efficiency

3% Tilgung (Recommended)

Monthly payment: €1,625
Full repayment period: Approximately 23 years
Total interest paid over full term: Approximately €148,000
Restschuld after 10 years: €185,000 (€115,000 repaid)
Verdict: The sweet spot for most borrowers. €250 more per month saves approximately €48,000 in total interest

4% Tilgung (Aggressive)

Monthly payment: €1,875
Full repayment period: Approximately 19 years
Total interest paid over full term: Approximately €118,000
Restschuld after 10 years: €140,000 (€160,000 repaid)
Verdict: Excellent for high earners. Dramatically reduces total cost and builds equity quickly

5% Tilgung (Very Aggressive)

Monthly payment: €2,125
Full repayment period: Approximately 16 years
Total interest paid over full term: Approximately €97,000
Restschuld after 10 years: €92,000 (€208,000 repaid)
Verdict: Cuts total interest by 70% vs. 1% Tilgung. Only practical with strong income

The 'Tilgung Trap': Why Low Tilgung Can Be Dangerous

Choosing a very low Tilgungssatz (1-1.5%) to keep monthly payments low creates a dangerous long-term situation. With low Tilgung, you barely reduce your loan balance over the fixed period. When it is time to refinance, you have a large Restschuld — and if rates have risen, your new payments could increase dramatically on this still-large balance.

Example: A €300,000 loan at 3.5% with 1% Tilgung leaves a Restschuld of €268,000 after 10 years. If you refinance at 5.0% with 2% Tilgung, your new monthly payment jumps from €1,125 to €1,563 — a 39% increase. With 3% initial Tilgung, the Restschuld would have been only €185,000, and the same refinancing scenario would produce a monthly payment of €1,080 — actually lower than before.

Higher Tilgung today is insurance against higher rates tomorrow. The faster you reduce your principal, the less exposed you are to unfavorable refinancing conditions.

How to Choose the Right Tilgungssatz

Step 1: Calculate Your Maximum Comfortable Payment

Start with your net household income and subtract all non-mortgage expenses (living costs, insurance, transportation, savings, leisure). The amount remaining is your maximum affordable monthly mortgage payment. Financial advisors recommend that your total mortgage payment (interest + Tilgung) should not exceed 30-35% of your net household income.

Step 2: Work Backward from Payment to Tilgung

Once you know your maximum payment, work backward. If you can afford €1,800/month on a €300,000 loan at 3.5%, your annual payment capacity is €21,600, which is 7.2% of the loan. Subtract the 3.5% interest, and your maximum Tilgung is 3.7%. Round down slightly for comfort and you arrive at a 3.5% Tilgung.

Step 3: Consider Future Income Changes

Will your income increase in the coming years (career progression, spouse returning to work)? Or might it decrease (parental leave, career change, part-time work)? If income growth is likely, starting with a lower Tilgung and increasing later (via Tilgungswechsel) makes sense. If income may decrease, lock in a comfortable Tilgung now.

Step 4: Factor in Sondertilgung

If your income is variable (bonuses, freelance income, commission), a moderate regular Tilgung combined with aggressive Sondertilgung when cash is available may be the best approach. This gives you flexibility without committing to high fixed payments.

Tilgungswechsel: Adjusting Your Repayment Rate

Some mortgage contracts include a Tilgungswechsel option, which allows you to change your Tilgungssatz during the fixed-rate period — typically within a range (e.g., 1-5%) and subject to certain conditions (e.g., maximum one change per year). This provides valuable flexibility to adapt your repayment strategy to changing circumstances.

Not all contracts include this option, and those that do may have different rules and limitations. Always negotiate Tilgungswechsel rights during your initial mortgage negotiation. It is one of the most valuable flexibility features you can have in your contract.

Tilgungssatz and Zinsbindung: The Critical Interaction

Your Tilgung rate and Zinsbindung (fixed rate period) interact in important ways. The combination of a short Zinsbindung and low Tilgung is the riskiest configuration — it leaves you with a large Restschuld to refinance in a potentially higher-rate environment.

Short Zinsbindung + Low Tilgung: Maximum risk — large Restschuld exposed to rate changes
Short Zinsbindung + High Tilgung: Moderate risk — small Restschuld but potentially higher rate at refinancing
Long Zinsbindung + Low Tilgung: Moderate risk — rate is safe but you build equity slowly
Long Zinsbindung + High Tilgung: Minimum risk — rate is locked in and equity builds rapidly

Current Recommendation (Early 2025)

In the current rate environment with Sollzins around 3.0-3.5%, a Tilgungssatz of 2-3% is recommended for most borrowers. At these rate levels, a 2% Tilgung produces a manageable monthly payment while a 3% Tilgung offers significantly better long-term economics.

If your budget allows, targeting 3% Tilgung should be the priority. The €250/month difference compared to 2% Tilgung (on a €300,000 loan) saves approximately €48,000 in total interest — one of the best financial returns available to homeowners.

Frequently Asked Questions

What is the minimum Tilgungssatz in Germany?

Most German banks require a minimum Tilgungssatz of 1%, though some banks in the current rate environment have increased this to 2%. The minimum ensures that the loan is actually being repaid rather than only covering interest. Financial advisors strongly recommend at least 2-3% Tilgung for manageable loan duration and reasonable total costs.

Can I change my Tilgungssatz during the loan term?

Some mortgage contracts include a Tilgungswechsel (repayment rate change) option, allowing you to adjust your Tilgung rate during the fixed period, typically within a range of 1-5%. This is not standard in all contracts, so you need to negotiate it upfront. It provides valuable flexibility if your income changes.

How much does increasing the Tilgungssatz from 2% to 3% save?

On a €300,000 mortgage at 3.5% interest: increasing from 2% to 3% Tilgung raises your monthly payment by €250 (from €1,375 to €1,625) but saves approximately €45,000 in total interest over the loan life and reduces the repayment period from about 30 years to 23 years. The €250 monthly difference has an outsized impact on your total cost.