GuideStead.

Practical calculators for real decisions.

Simple estimates for pay, work, and everyday money decisions.

Paycheck calculator

Estimate what you may take home after federal, Social Security, Medicare, and a state income tax rate you enter yourself.

Job offer comparison

Compare two jobs after estimated taxes, commute time, and work-related costs.

Raise calculator

See whether a raise increased your buying power after inflation.

Car purchase calculator

Compare the total cost of paying cash, financing, or leasing the same vehicle.

College offer comparison

Compare the total financial cost of two college acceptance offers, including aid and debt.

First home affordability

Estimate your total monthly housing cost for a home purchase and see how it compares to your income.

Employer retirement match

See if you're capturing your full 401(k) match, plus your overall savings rate this year.

Commute cost

See what your commute actually costs you a year, and compare it to public transit.

How it works

Each GuideStead calculator works on its own, and they all follow the same three steps.

1. Enter your numbers

Start with the pay, work, and household details that apply to your situation.

2. Review the estimate

Treat the result as a practical starting point, and check the assumptions listed on that calculator before any important decision.

3. Copy or print it

Use Copy summary to paste your results into notes or an email, or Print / Save PDF to save a copy.

FAQ

Where are my inputs saved?

Each calculator saves your entries in this browser on this device, separately from the others, so it can remember them next time. To remove them, use Start fresh in a calculator or clear your browser data.

Are calculator inputs sent anywhere?

No. The numbers you type into the calculators never leave your browser — they aren’t sent to us, to analytics, or to any ad service.

Do I need an account?

No. There is no login, password, or online finance profile.

How accurate are the estimates, and how should I read them?

They’re honest starting points, not exact figures. Real-world results depend on details a simple estimate can’t know — things like W-4 elections, local taxes, employer-specific deductions and benefits, credits, and rounding. Every calculator lists the assumptions it makes, so the most useful habit is to read those before relying on a number for a real decision.

Where do the numbers, rates, and rules come from?

From primary sources only — the IRS, the Social Security Administration, the Bureau of Labor Statistics, and state revenue departments — never second-hand summaries. Each figure, and the year it applies to, is documented on our Sources page. Where something is a common guideline rather than a hard rule — like the 28%/36% housing ratio — the calculator says so, so you can treat it as a gut check rather than a pass/fail test.

Why doesn’t a calculator go further — projecting the future or covering every outcome?

By design. Each tool is scoped to what it can estimate honestly from the numbers you enter. It won’t project decades ahead on an assumed rate of return that nobody can actually know, and it won’t fold in things it can’t measure — career outcomes, program quality, personal fit. A confident-looking number built on a guess is more misleading than helpful, so each calculator notes what it covers and what it deliberately leaves out.

How do I find what a calculator’s terms and assumptions mean?

Right on the calculator itself. Each one defines its terms and lists its assumptions on the page where you use them, so anything unfamiliar — like “commute time value,” which is optional context rather than money actually spent — is explained in place. The Sources page carries the underlying references if you want to go deeper.

Is this financial advice?

No. GuideStead calculators are for estimates and planning only.