Estimate only
GuideStead provides calculators for planning and comparison. Calculator results are estimates, not exact payroll, tax, or financial calculations.
GuideStead calculators are not tax, legal, payroll, accounting, investment, or financial advice. Calculator estimates should not be used as the only basis for an employment, tax, benefits, or household finance decision.
Why results may differ
Actual paychecks and the real-world financial value of a job offer may differ from the calculator estimates because of W-4 details, employer payroll settings, local taxes, state rules, pre-tax and after-tax deductions, benefits, credits, garnishments, bonuses or other extra pay, rounding, and changes in law.
State tax limitations
GuideStead does not model any state's tax code. Any state tax figure shown comes entirely from a rate you enter yourself, so its accuracy is your responsibility, not something GuideStead verifies or guarantees. See Sources & assumptions for how that rate is applied.
Inflation estimate limits
Raise comparisons use broad Consumer Price Index for All Urban Consumers (CPI-U) annual averages. CPI-U is useful for general comparison, but it may not match your personal cost changes for housing, food, healthcare, transportation, childcare, or other household expenses.
Car purchase limitations
The car purchase calculator compares financing cost only. It does not include insurance, maintenance, fuel or charging, parking, registration renewals, or the opportunity cost of cash tied up in a purchase. Vehicle depreciation and lease residual value are your own estimates, not modeled data — GuideStead does not model depreciation for any specific make, model, or year. Lease payments use a simplified formula and may not exactly match a dealer's actual quote. Sales tax treatment for leases varies by state; this calculator applies your entered rate to the monthly payment, which is a common but not universal method. Vehicle safety ratings and recall history are not included directly — the calculator links to the National Highway Traffic Safety Administration's own tools instead.
College offer comparison limitations
The college offer comparison compares financial cost only: sticker price, grants and scholarships, loans, and the resulting monthly loan payment after graduation. It does not evaluate program quality, career outcomes, expected earnings by major or school, or personal fit. Annual costs and aid are treated as flat across every year of the degree — no tuition inflation is modeled. This does not model official financial aid formulas, work-study income, tax benefits of student loan interest, or education tax credits. Loan repayment assumes standard fixed-rate amortization for the full term; actual federal repayment options (income-driven repayment, deferment, forgiveness programs) can change the real monthly payment and total cost substantially. For an actual enrollment decision, compare this estimate with each school's official financial aid award letter.
First home affordability limitations
This calculator estimates recurring monthly housing cost only: loan principal & interest, property tax, homeowners insurance, PMI, and HOA dues, based on rates and amounts you enter. It does not include closing costs, maintenance, utilities, or moving costs. Property tax is applied to the home's purchase price, not the assessed value your actual tax bill will use — those can differ, especially right after a sale. PMI is shown as a flat monthly cost and isn't reduced or removed over time, even though it usually drops off once you build about 20% equity.
The 28%/36% debt-to-income guideline shown with your ratios is a widely used rule of thumb — not a law, and not any single lender's actual cutoff. Conventional loans often reference it, but government-backed loans like FHA, and borrowers with strong credit or savings, are frequently approved well above it. Treat it as a helpful gut check on affordability, not a pass/fail test. For an actual purchase, a lender can tell you your real numbers.
Employer retirement match limitations
This calculator doesn't know your actual employer's match formula, vesting schedule, or plan rules — you build the match tiers yourself from your plan document or benefits portal, and the calculation is only as accurate as what you enter. It's a snapshot of this year only: it does not project account growth, compounding, or what your savings will be worth at retirement, since that depends on an assumed rate of return that isn't knowable in advance and would risk looking like a prediction rather than an estimate. "Other savings & investments" and "other income" are whatever labels and amounts you choose to enter — nothing is verified, and none of it accounts for taxes, contribution limits, or account-specific rules. Vesting (whether you'd actually keep the match if you left your job before a certain date) also isn't modeled; check your plan document for that.
Commute cost limitations
Vehicle cost here uses the IRS standard mileage rate, a published reimbursement figure that bundles fuel, maintenance, and depreciation into one number — a reasonable proxy, not your exact out-of-pocket spending, which depends on your specific vehicle's fuel economy, upkeep, and value. Parking and tolls are whatever you enter; nothing is looked up for your specific location. "Commute time value" is optional and is not real money spent or saved — it applies your own gross hourly pay to time spent commuting, to show the time trade-off alongside the dollar one, the same approach Job Offer Comparison uses. The public transit comparison uses only the monthly pass cost you enter; it doesn't model any specific transit agency's fares, routes, or schedules.
Before important decisions
Federal and state tax rules, CPI-U figures, IRS mileage rates, and retirement contribution limits can change. Before making an employment, tax, benefits, or household finance decision, compare the calculator estimate with payroll records, official sources, tax software, or advice from an appropriately qualified professional.