Money Tools — Loans, Budgets, Salary, Taxes & More

Money decisions come with a lot of math. Should you buy the car now or wait? Is switching to LED lighting actually worth the investment? How much should you budget for groceries this month? These five tools help you work through the numbers without stress.

Loan Calculator

You're thinking about buying a used car and the dealer is quoting you a €20,000 loan at 5.5% over five years. What's actually coming out of your account every month? The loan calculator tells you instantly — it breaks down your monthly payment, shows you total interest paid, and gives you the full picture of what that loan costs over time.

It's not just cars either. Student loans, mortgages, equipment financing — any time someone is asking you to borrow money, you can plug in the numbers and see what you're really committing to. You can also experiment. What if you paid an extra €100 per month? The calculator updates immediately, so you can see exactly how much faster you'd pay it off and how much interest you'd save.

Budget Planner

Most people's budgets live in their head, which means they're constantly surprised by how much they spent. The budget planner lets you put actual numbers on your categories and see where your money actually goes.

Put in rent (€850), groceries (€160 per month), utilities (€50), car payment (€350), and everything else that's actually coming out of your account. Add your monthly income and immediately see if you're overspending or if you have room for that concert ticket next month. It's not fancy, but it works. It's honest, and that's what budgeting needs to be.

Depreciation Calculator

Cars lose value the second you drive them off the lot. A €30,000 car might be worth €24,000 after three years. If you're trying to figure out whether to buy new or used, the depreciation calculator helps you work through the lifetime cost.

You put in the purchase price, how many years you'll own it, and what the average depreciation rate is. It shows you how much value you're losing each year and what you can realistically expect to sell it for. This is the hidden cost nobody talks about — the actual money you lose when you own something. It matters a lot when you're deciding between different options.

Energy Cost Estimator

You're standing in the hardware store looking at two light bulbs. The cheap incandescent bulb costs €2. The LED bulb costs €9 but uses way less electricity. Which one actually saves you money? The energy cost estimator does the math.

You tell it how much electricity costs where you live (around €0.25 per kWh in much of Europe), how much power each bulb uses, and how many hours a day it runs. It calculates the cost to operate each one over time and shows you when the LED pays for itself. Turns out most LED swaps save you money within a year — but now you have the actual numbers to back that up.

Fuel Savings Calculator

Your commute is 60 km per day and you're wondering if getting a more efficient car makes financial sense. The fuel savings calculator shows you exactly how much you'd save by switching to a vehicle that uses less fuel.

Put in your current car's consumption, the new car's consumption, how many kilometers you drive annually, and the current fuel price. It calculates your annual fuel cost for both vehicles and shows the difference. If you're considering a hybrid or electric car, this is essential — you can see whether the efficiency gain justifies the higher purchase price or monthly payment.

All of these tools run in your browser and keep your data private. No accounts, no tracking, no algorithms — just straightforward financial math to help you make better decisions.

Salary Converter

You're offered a job that pays $55,000 per year. What's that per month? Per week? Per hour? The salary converter breaks down any annual salary into all the time periods — hourly, daily, weekly, bi-weekly, monthly, and annual. It works the other direction too. If you're freelancing at $45/hour, how much is that annually?

It accounts for your actual work schedule. Enter your hours per week and weeks per year to get accurate numbers. Working 40 hours over 50 weeks (2 weeks vacation) gives a different hourly rate than someone working 37.5 hours over 48 weeks. The details matter when you're negotiating.

Compound Interest Calculator

You put $10,000 into an index fund earning 7% annually and add $100 per month. What will it be worth in 20 years? The compound interest calculator shows you exactly — including a year-by-year breakdown table so you can see how the growth accelerates over time.

This is the tool that makes compound interest click. Seeing that your $10,000 becomes $70,000+ in 20 years (with those $100 monthly contributions) is motivating. You can experiment with different rates, time horizons, and contribution amounts to find a strategy that works for you.

Tax Estimator

Tax season arrives and you want a quick sense of how much you'll owe before talking to your accountant. The tax estimator calculates estimated US federal income tax using 2024 brackets. Enter your gross income, select your filing status, and see your taxable income, total tax, take-home pay, and effective rate.

It shows the progressive bracket breakdown too, so you can see exactly how much of your income is taxed at each rate. This is helpful for understanding why a raise doesn't mean you suddenly lose money to a higher bracket — only the income above each threshold is taxed at the higher rate.

Paycheck Calculator

Your gross salary is one number, but what actually hits your bank account? The paycheck calculator shows you. Enter your gross annual salary, pay frequency, tax rates, and pre-tax deductions (401k, health insurance), and it breaks down every deduction — federal tax, state tax, Social Security, Medicare — to show your net pay per paycheck.

It's eye-opening to see the full breakdown. Most people know taxes take a chunk, but seeing the exact dollar amounts for FICA, state tax, and pre-tax deductions itemized on one screen helps you understand where your money actually goes.