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Free budget planner and savings calculator

Three simple calculators to help you make informed decisions: how to split your budget, what your savings could grow into, and how much to set aside each month to reach a goal. No sign-up, everything is calculated in your browser.

Free, no credit card, no commitment.

  • No sign-up
  • Calculated in your browser
  • Instant results
Zély in front of jars of coins, illustrating the budget and savings calculators

Choose your calculator

Monthly budget planner

Enter your usual monthly income and expenses to see what you have Left to Live On and compare your budget with the 50/30/20 rule.

Left to Live On

€270.00

Monthly expenses €1,730

How your income is split

Needs 67 %guideline 50%
Wants 11 %guideline 30%
Savings 9 %guideline 20%

Calculations happen in your browser: no amounts are sent or stored.

Track your budget for real with Ecomely

The essentials

  • 01

    50/30/20 budget

    The ideal split of your income between needs, wants and savings.

  • 02

    Savings

    What your deposits grow into with compound interest.

  • 03

    Goal

    How much to save each month to reach a set amount by a set date.

  • 04

    Private

    Nothing is sent or stored: the math happens on your device.

The 50/30/20 rule for a balanced budget

The 50/30/20 rule splits your net income into three parts: about 50% for needs (housing, energy, groceries, transportation, insurance), 30% for wants (hobbies, going out, vacations, shopping) and 20% for savings and paying off debt early. It’s a guideline, not a hard rule: in big cities, housing alone often takes more than half the budget.

The calculator shows you the ideal split for your income and compares it with your current situation. The gap tells you where to act first.

How does compound interest work?

With compound interest, the interest you earn generates its own interest the following year. Over a few years, the effect is modest; over twenty or thirty years, it becomes huge. That’s why starting to save early, even small amounts, often matters more than how much you save.

The savings calculator shows how much of your final balance comes from your deposits and how much from interest, based on the rate, duration and monthly deposit you enter. Results are simulations: actual returns vary.

Work out how much to save for a goal

A down payment on a home, a car, a vacation, an emergency fund: when your goal has an amount and a date, all you need to know is how much to set aside each month. The goal calculator tells you, taking into account what you’ve already saved and any expected return.

In Ecomely, you can then create a Money Pot for that goal and track every deposit.

When a calculation isn’t enough

A calculator gives you a snapshot. To stay on track over time, you need to follow what really happens: what’s spent, what’s set aside, what’s left. Ecomely does this tracking for free: your monthly budget, Money Pots, Net Worth, and Zély to give you a heads-up before payments are due.

From calculating to tracking, in one click Create your free account and turn your goal into a Money Pot.

Create my free account

How to use these calculators to make decisions

A few tips to get the most out of each simulation.

  1. Start from your actual net income

    What really lands in your account each month after taxes and deductions, not your gross pay.

  2. Be conservative with rates

    For a savings simulation, a modest rate gives a more realistic estimate than an optimistic one.

  3. Try several scenarios

    Add €20 to your deposit or start a year earlier: compare the effect on the final result.

  4. Build an emergency fund first

    Before any other goal, three to six months of expenses set aside will protect you from the unexpected.

  5. Turn the result into a habit

    Set up an automatic transfer on payday, and a Money Pot to watch your goal get closer.

How it works

  1. 1

    Pick a calculator

    Budget, savings or goal.

  2. 2

    Enter your numbers

    Income, deposits, rate, duration.

  3. 3

    Read the result

    Instantly, no sign-up.

  4. 4

    Start tracking

    Create a Money Pot in Ecomely to stay on target.

Who is it for?

First budget

Know how much to spend on housing, fun and savings.

Buying a home

Work out the monthly effort to build a down payment.

Saving for your kids

See what a few dozen euros a month can grow into over 18 years.

Emergency fund

Set a realistic goal and a date to reach it.

The Ecomely apps for this

See the plans

Frequently asked questions

Are the calculators free?

Yes, free and with no sign-up. Everything is calculated in your browser: nothing is sent or stored.

What is the 50/30/20 rule?

A suggested split of net income: 50% for needs, 30% for wants, 20% for savings. It’s a guideline to adapt to your situation.

How does compound interest work?

The interest you earn is added to your balance and earns interest in turn. The longer the period, the bigger the effect.

Are the results guaranteed?

No, they’re simulations. Actual returns depend on your investments and may vary.

Can I track my savings afterward?

Yes, in Ecomely: create a Money Pot with your goal and track every deposit, for free.

From calculating to tracking, in one click

Create your free account and turn your goal into a Money Pot.

Free, no credit card, no commitment.