Blog

Finance tips, explanations and guides for our calculators.

Salary & Taxes

Gross-to-Net Salary Calculator: Understanding Your German Payslip 2026

What stays from your gross salary? Tax classes, social security, income tax and church tax explained — with a worked example and free calculator.

March 29, 2026 · 8 min read
Investing

Investment Return Calculator — How to Compare Returns the Right Way

Nominal vs. real, CAGR vs. simple return, gross vs. net. With examples for ETFs, savings accounts and real estate.

March 29, 2026 · 8 min read
Financial Freedom

Coast FIRE: Financial Freedom Without Saving More

What Coast FIRE is, how the formula works, who it's for, and how to calculate your personal Coast FIRE number.

March 29, 2026 · 9 min read
Basics

Rule of 72: When Will Your Money Double?

The Rule of 72 explained: find out in seconds how long it takes your money to double. With examples for ETFs, savings accounts and inflation.

March 29, 2026 · 7 min read
Investing

Savings Account Comparison 2026: Best Accounts at a Glance

The best savings accounts in Germany 2026 compared: interest rates, deposit protection and calculator. Find the best account for your money.

March 29, 2026 · 8 min read
Investing

How to Calculate Compound Interest — Formula, Examples & Calculator

Learn how to calculate compound interest step by step. Includes the formula, worked examples, the Rule of 72, and a free online calculator.

March 27, 2026 · 7 min read
Investing

How to Create a Savings Plan — ETF Savings Plan Guide in 5 Steps

Learn how to create an ETF savings plan from scratch. Covers cost averaging, realistic returns, and a step-by-step setup guide.

March 27, 2026 · 8 min read
Financial Freedom

Financial Independence Calculator — Calculate Your FIRE Number with the 4% Rule

Use our FIRE calculator to find your financial independence number. Learn the 4% rule, savings rate impact, and Coast FIRE.

March 27, 2026 · 8 min read
Financial Planning

Emergency Fund Calculator: How Much Do You Really Need?

How many months of expenses to save, which rules of thumb apply, and how to calculate your personal emergency fund.

March 27, 2026 · 7 min read
Loans

Loan Amortization Schedule: Pay Off Your Loan Faster

How amortizing loans work, why extra payments save thousands in interest, and how to pay off your loan faster.

March 27, 2026 · 7 min read
Basics

Understanding Inflation: How Your Money Loses Value

What inflation is, how it's measured, why it erodes your savings, and how to protect your wealth with the right investments.

March 27, 2026 · 7 min read
Real Estate

Buy or Rent 2026: What Really Pays Off?

Current figures, an honest cost comparison and the most common misconceptions around the buy-or-rent decision in Germany.

March 24, 2026 · 8 min read
Investing

ETF Savings Plan Calculator: What Will 100 € per Month Get You?

How much wealth can 100 € per month generate after 10, 20 or 30 years? With worked examples, tables and a savings plan calculator.

March 24, 2026 · 8 min read
Financial Freedom

FIRE Movement: How to Become Financially Independent

What the FIRE movement is, how the 4% rule works and how to calculate your personal FIRE number.

March 24, 2026 · 8 min read
Basics

Compound Interest Explained

What compound interest is, how the formula works and why it turns small amounts into substantial wealth.

March 23, 2026 · 5 min read
Loans

Loan Calculator: How to Calculate Your Monthly Payment

How a loan calculator works, the amortization formula explained, and practical tips on interest rates, extra payments, and total cost comparison.

March 29, 2026 · 8 min read
Real Estate

Rental Yield Calculator — Is Your Property a Good Investment?

Gross vs. net rental yield, closing costs, maintenance, and vacancy. With examples and a free rental yield calculator.

March 29, 2026 · 9 min read