Skip to content
Nemorgi

Monthly budget

How much you have left over or are short each month and how you split your income between needs, wants and savings.

Enter your data: no value is filled in for you.

€

Monthly spending and savings

Result

Waiting for your data. Enter your net monthly income.

Calculation version: personal@1.0.0. The calculation runs in your browser: we don't send or store the amounts you enter. We only count, without identifying you, that the tool has been used.

How to use it

  1. 1Enter your net income for the month.
  2. 2Note each expense with its amount and classify it as a need, a want or leisure, or savings and investment.
  3. 3See how much you have left (or are short) and compare your split with the 50/30/20 reference.

How it calculates

  • Left over = income − needs − wants − savings set aside.
  • Savings rate = (savings set aside + what's left over, if positive) / income.
  • The 50/30/20 rule (50% needs, 30% wants, 20% savings) is a widely cited rule of thumb, not a standard.

See the full methodology →

Verifiable example

With €2,200 of income, €1,250 of needs, €235 of wants and €150 of savings, €565 is left over each month: the savings rate is 32.5% and needs are 56.8% of income.

Limitations

  • It doesn't replace real tracking of your spending: use the amounts from your statements.
  • Annual expenses (insurance, taxes) are best divided by 12.
  • The data never leaves your browser.

What the paid levels will add

Compare the levels →
  • Pro· soon

    Saved and compared models

    Save versions of your plan and compare them.

    Coming in the Pro level · Coming soon

    Cloud projects, more capacity and reports without watermark.

    Designed for: People starting a business and less specialised companies

    Only the Basic level exists today, and it is free. The other levels can't be bought yet and have no published price; this is the current plan and may change.

    Compare the levels
  • Advanced· soon

    Investor and bank report

    Dossier with assumptions, scenarios, sensitivity and methodology.

    Coming in the Advanced level · Coming soon

    Each module's professional engines, alerts, scheduled updates and reports with methodology.

    Designed for: Startups and growing companies

    Only the Basic level exists today, and it is free. The other levels can't be bought yet and have no published price; this is the current plan and may change.

    Compare the levels
  • Advanced· soon

    Portfolio Prioritizer

    Prioritise projects by objectives, budget, risk, resources and constraints.

    Coming in the Advanced level · Coming soon

    Each module's professional engines, alerts, scheduled updates and reports with methodology.

    Designed for: Startups and growing companies

    Only the Basic level exists today, and it is free. The other levels can't be bought yet and have no published price; this is the current plan and may change.

    Compare the levels
  • Master· soon

    Monte Carlo and portfolio prioritisation

    Probability of success and which projects to fund with your budget.

    Coming in the Master level · Coming soon

    Everything without practical limits: optimisation, Monte Carlo simulation, AI with your projects' context, API and licensed data.

    Designed for: Large companies, specialist consultancies and universities

    Only the Basic level exists today, and it is free. The other levels can't be bought yet and have no published price; this is the current plan and may change.

    Compare the levels

Keep exploring

See all 15 tools →

Indicative result

It doesn't constitute financial, tax or investment advice. Check important decisions with a professional.