Savings Goals · Category index

Savings — Calculators & Guides

Tools and concept explanations for building long-term savings. Each calculator runs in your browser and the inputs never leave your device.

Updated

Content reviewed and refreshed on 25 Aug 2026.

3 tools 10 guides

If the terms are new

Start with the decision you need to make today. The calculators explain the result in everyday language, and the glossary below defines the terms that usually slow readers down.

Plan savings around real cash flow

Use the savings calculators to turn a goal into a monthly amount and then test whether that amount fits your budget. Emergency funds, sinking funds and long-term goals work better when they are planned before discretionary spending.

If the target looks too high, change the deadline, the monthly amount or the size of the goal before you rely on leftover money.

What are you trying to decide?

Pick the question closest to today’s money decision.

Protect a bad month Work out how much cash buffer to keep. Grow money over time See how contributions and compounding change the outcome. Plan future income Translate monthly income goals into a portfolio target.

The tools

Calculators

01 Retirement Target Calculator Use the 4% rule as a quick retirement planning shortcut. Enter a portfolio amount, a target monthly income … Free Tool 02 Emergency Fund Calculator See how big your emergency fund should be — adjusted for current inflation, your savings interest, and your … Free Tool 03 Compound Interest Calculator See how a one-off principal plus regular contributions grow over time when interest compounds month-on-month. Free Tool

Separate safety money from goal money

A cash buffer protects rent, groceries and bills from a bad month. Goal savings pay for planned events such as travel, home costs or a car replacement. Mixing the two makes progress look better than it really is.

Review savings after income or fixed costs change, not only at the end of the year.

Read & understand

Concepts

01 ECB Key Interest Rate: A Live History Live chart of the ECB Deposit Facility Rate since 2014, with every rate move and what it means for savings and mortgages … Info 02 ECB Deposit Facility Rate: Peak and Every Change, 2022–2024 The ECB deposit facility rate hit 4.00% in September 2023 — its highest ever — after ten straight hikes. Here is the … Info 03 EUR / USD: A Long-Run Live History Live monthly chart of the EUR/USD exchange rate since 2014, plus a plain-English read on what it means for cash, investments, and … Info 04 Warren Buffett’s Golden Rule: Never Lose Money Warren Buffett’s "Rule No. 1: never lose money" is not about avoiding every down year. It is about not taking a loss … Info 05 Can You Retire at 60 with €2 Million? €2 million sounds like enough to retire at 60 — but what monthly income does it actually produce? At a safe 4% … Info 06 Retire at 70 with €2 Million: How Much Income? The same €2 million pays more if you retire at 70 than at 60, because your money has fewer years to last. … Info 07 Compound Interest Explained How small, regular contributions become a large balance over decades — the math behind the snowball effect. Info 08 How Compound Interest Works A short, math-first reference: the formula, why time matters more than rate, and where the model breaks down. Info 09 The 4% Rule, Explained with €500,000 The 4% rule is a shortcut for turning savings into retirement income: draw 4% the first year, adjust for inflation, and the … Info 10 How Much to Invest for €3,000 a Month To live on €3,000 a month from investments you need a portfolio of about €900,000 at a 4% withdrawal rate. Here is … Info

Frequently asked questions

How much should I keep in an emergency fund?

A common baseline is three to six months of essential expenses. Variable income, dependants or high fixed costs usually justify a larger buffer.

Should I save while paying debt?

Usually yes, at least a small emergency buffer. After that, compare debt interest with the importance and deadline of each savings goal.

What if my savings goal feels impossible?

Treat the calculator result as a planning signal. Extend the deadline, reduce the target or free cash flow before cutting essential spending.

Glossary

Emergency fund: Meaning
An emergency fund is cash kept for real disruptions: income drops, urgent repairs, medical bills or other expenses that cannot politely wait. The point is not high return; the point is being able to pay without panic borrowing.

Example
This is the money that keeps a broken boiler from becoming a credit-card problem.
Sinking fund: Meaning
A sinking fund is money set aside gradually for a cost you already know is coming. It turns big irregular bills into smaller monthly pieces, so the bill does not ambush one month of your budget.

Example
A holiday in August is less dramatic when January already started paying for it.
Savings target: Meaning
A savings target combines an amount with a deadline. That matters because “save more” is vague, while “build 2,400 € by December” tells you what monthly action is needed.

Example
“Someday” is a wish. “2,400 € by December” is a target.
Cash buffer: Meaning
A cash buffer is easily available money kept separate from investments and normal spending. It is there for timing problems: a late invoice, a higher bill, or a month where expenses arrive before income.

Example
Future-you has no calendar invite, but still appreciates being paid first.