United States
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Loans
PopularARM vs Fixed-Rate Mortgage CalculatorA lower rate now, in exchange for uncertainty later.Auto Loan CalculatorWork out your monthly car payment and total interest.Credit Card Payoff CalculatorSee how long payoff takes and what interest costs.HELOC vs Cash-Out Refinance CalculatorA cash-out refi resets your ENTIRE mortgage rate, not just the new cash.Mortgage & Payoff CalculatorMortgage payments, interest, and payoff savings, in one place.Mortgage Points Buy-Down CalculatorThe breakeven decides everything, not the rate on the brochure.Payoff vs InvestExtra cash: pay down debt, or invest it instead?Student Loan Repayment Plan ComparatorA lower payment now usually means more years and more total interest.
ARM vs Fixed-Rate Mortgage Calculatore.g. 7/1 ARM vs 30-year fixedcost over your real hold periodLoansAuto Loan Calculatore.g. $30K, 60mo at 6%$580/moLoansCredit Card Payoff Calculatore.g. $8,000 at 22%payoff planLoansHELOC vs Cash-Out Refinance Calculatore.g. $80K cash neededHELOC or refi, which costs lessLoansMortgage & Payoff Calculatore.g. $400K loan, 30 yrs$2,398/moLoansMortgage Points Buy-Down Calculatore.g. 2 points on $400Kbreakeven vs your planned years in the homeLoansPayoff vs Investe.g. Extra $300/mo, 20-yr loan$9,800 saved by paying offLoansStudent Loan Repayment Plan Comparatore.g. $45K balancestandard vs income-driven payment estimateLoans
ARM vs Fixed-Rate Mortgage CalculatorA lower rate now, in exchange for uncertainty later.Auto Loan CalculatorWork out your monthly car payment and total interest.Credit Card Payoff CalculatorSee how long payoff takes and what interest costs.HELOC vs Cash-Out Refinance CalculatorA cash-out refi resets your ENTIRE mortgage rate, not just the new cash.Mortgage & Payoff CalculatorMortgage payments, interest, and payoff savings, in one place.Mortgage Points Buy-Down CalculatorThe breakeven decides everything, not the rate on the brochure.Payoff vs InvestExtra cash: pay down debt, or invest it instead?Student Loan Repayment Plan ComparatorA lower payment now usually means more years and more total interest.
Investing
Popular1031 Exchange CalculatorFull deferral needs equal-or-greater value, not just a like-kind swap.Investment Growth CalculatorSee what a monthly investment grows into over time.
1031 Exchange Calculatore.g. $800K sale, $120K depreciationtax deferred vs selling outrightInvestingInvestment Growth Calculatore.g. $500/mo, 20 yrs$274KInvesting
1031 Exchange CalculatorFull deferral needs equal-or-greater value, not just a like-kind swap.Investment Growth CalculatorSee what a monthly investment grows into over time.
Savings
Popular529 CalculatorSee what a monthly 529 contribution grows into for college.529 Plan vs Custodial Brokerage CalculatorTax-free growth with strings attached, or no strings with a tax bill.CD Ladder CalculatorSpread savings across CDs for steady, staggered returns.Compound Interest CalculatorWatch a lump sum snowball over time.Coverdell ESA vs 529 Plan CalculatorMore flexibility, capped at $2,000 a year.High-Yield Savings CalculatorSee what a better savings rate earns you over time.HSA CalculatorSee how an HSA grows with its triple tax break.
529 Calculatore.g. $200/mo, 13 yrs$47KSavings529 Plan vs Custodial Brokerage Calculatore.g. $300/mo, 10 yrs529 vs UTMA/UGMA, post-taxSavingsCD Ladder Calculatore.g. $20,000 across 5 rungs4.5% average yieldSavingsCompound Interest Calculatore.g. $10,000 at 7%, 10 yrs$19.7KSavingsCoverdell ESA vs 529 Plan Calculatore.g. $6,000/yr desiredthe growth gap from the Coverdell capSavingsHigh-Yield Savings Calculatore.g. $5,000 at 4.5%, 5 yrs$6,280SavingsHSA Calculatore.g. $3,000/yr, 20 yrs$130K tax-freeSavings
529 CalculatorSee what a monthly 529 contribution grows into for college.529 Plan vs Custodial Brokerage CalculatorTax-free growth with strings attached, or no strings with a tax bill.CD Ladder CalculatorSpread savings across CDs for steady, staggered returns.Compound Interest CalculatorWatch a lump sum snowball over time.Coverdell ESA vs 529 Plan CalculatorMore flexibility, capped at $2,000 a year.High-Yield Savings CalculatorSee what a better savings rate earns you over time.HSA CalculatorSee how an HSA grows with its triple tax break.
Retirement
Popular401(k) CalculatorProject your 401(k) balance with contributions and employer match.Backdoor Roth IRA CalculatorWhat the pro-rata rule actually taxes on your conversion.Coast FIRE / Barista FIRE CalculatorThe amount you need today to coast to retirement on growth alone.FIRE Number Calculator (Sequence-Risk Adjusted)Retiring decades early needs a lower withdrawal rate than 4%.Mega Backdoor Roth CalculatorHow much extra after-tax 401(k) room you actually have.Required Minimum Distribution (RMD) CalculatorA required withdrawal you can't skip, with a real penalty for missing it.Retirement Number CalculatorFind the number you need to retire comfortably.Roth Conversion Ladder CalculatorEach conversion needs its own 5-year clock before it's penalty-free.Roth vs Traditional CalculatorPay tax now, or later? See which wins.Safe Withdrawal Rate BacktesterHow often your withdrawal rate would have survived US market history.Social Security EstimatorClaim at 62, 67, or 70? Compare your benefit.Solo 401(k) vs SEP IRA CalculatorThe employee-deferral gap that usually decides which plan wins.
401(k) Calculatore.g. $80K salary, 6% + match$612KRetirementBackdoor Roth IRA Calculatore.g. $80K pre-tax IRA + $7K contributionmost of it is taxableRetirementCoast FIRE / Barista FIRE Calculatore.g. $150K at 30are you already Coast FIRE for age 60?RetirementFIRE Number Calculator (Sequence-Risk Adjusted)e.g. $60K expenses, retiring at 45the SORR-adjusted targetRetirementMega Backdoor Roth Calculatore.g. $72K overall limitup to $47.5K in extra Roth roomRetirementRequired Minimum Distribution (RMD) Calculatore.g. $600K balance, age 75this year's required distributionRetirementRetirement Number Calculatore.g. $4,000/mo expensesyour numberRetirementRoth Conversion Ladder Calculatore.g. $40K/yr conversiontax due now and your access dateRetirementRoth vs Traditional Calculatore.g. Same $500/mo, 30 yrsRoth wins by ~$40K tax-freeRetirementSafe Withdrawal Rate Backtestere.g. 4% over 30 years, 60% equityhistorical success rateRetirementSocial Security Estimatore.g. $2,000 at 67$2,480 if you wait to 70RetirementSolo 401(k) vs SEP IRA Calculatore.g. $150K net SE incomeextra room with Solo 401(k)Retirement
401(k) CalculatorProject your 401(k) balance with contributions and employer match.Backdoor Roth IRA CalculatorWhat the pro-rata rule actually taxes on your conversion.Coast FIRE / Barista FIRE CalculatorThe amount you need today to coast to retirement on growth alone.FIRE Number Calculator (Sequence-Risk Adjusted)Retiring decades early needs a lower withdrawal rate than 4%.Mega Backdoor Roth CalculatorHow much extra after-tax 401(k) room you actually have.Required Minimum Distribution (RMD) CalculatorA required withdrawal you can't skip, with a real penalty for missing it.Retirement Number CalculatorFind the number you need to retire comfortably.Roth Conversion Ladder CalculatorEach conversion needs its own 5-year clock before it's penalty-free.Roth vs Traditional CalculatorPay tax now, or later? See which wins.Safe Withdrawal Rate BacktesterHow often your withdrawal rate would have survived US market history.Social Security EstimatorClaim at 62, 67, or 70? Compare your benefit.Solo 401(k) vs SEP IRA CalculatorThe employee-deferral gap that usually decides which plan wins.
Tax
Popular1099/Side-Hustle Quarterly Estimated Tax CalculatorSelf-employment tax comes on top of income tax, not instead of it.Capital Gains Tax CalculatorEstimate the tax owed on an investment gain.Federal Income Tax CalculatorFind your federal tax bracket and estimated bill.ISO vs NSO Exercise CalculatorNo tax now, or tax now -- and the AMT trap either way.Paycheck CalculatorSee what actually lands in your account after tax.QBI (Section 199A) Deduction CalculatorA hard cliff for service businesses, a softer landing for everyone else.RSU Tax & Withholding-Gap CalculatorThe 22% withholding rarely covers what you actually owe.S-Corp vs Sole Proprietor CalculatorOnly the salary portion pays payroll tax, if it's genuinely reasonable.US Expatriation / Green Card Exit Tax CalculatorA deemed sale of everything you own, the day before you leave.
1099/Side-Hustle Quarterly Estimated Tax Calculatore.g. $60K side incomeyour 4 quarterly payment amountsTaxCapital Gains Tax Calculatore.g. $5,000 gaintax owedTaxFederal Income Tax Calculatore.g. $90K incomeyour bracketTaxISO vs NSO Exercise Calculatore.g. 5,000 options, $35 spreadNSO tax vs ISO AMT exposureTaxPaycheck Calculatore.g. $70K salaryreal take-homeTaxQBI (Section 199A) Deduction Calculatore.g. $180K QBIactual deduction after the SSTB/wage limitsTaxRSU Tax & Withholding-Gap Calculatore.g. $80K vest at 32% bracketreal gap to set asideTaxS-Corp vs Sole Proprietor Calculatore.g. $150K net incomereal savings after compliance costTaxUS Expatriation / Green Card Exit Tax Calculatore.g. $2.5M net worth, $1.5M gainsestimated exit tax exposureTax
1099/Side-Hustle Quarterly Estimated Tax CalculatorSelf-employment tax comes on top of income tax, not instead of it.Capital Gains Tax CalculatorEstimate the tax owed on an investment gain.Federal Income Tax CalculatorFind your federal tax bracket and estimated bill.ISO vs NSO Exercise CalculatorNo tax now, or tax now -- and the AMT trap either way.Paycheck CalculatorSee what actually lands in your account after tax.QBI (Section 199A) Deduction CalculatorA hard cliff for service businesses, a softer landing for everyone else.RSU Tax & Withholding-Gap CalculatorThe 22% withholding rarely covers what you actually owe.S-Corp vs Sole Proprietor CalculatorOnly the salary portion pays payroll tax, if it's genuinely reasonable.US Expatriation / Green Card Exit Tax CalculatorA deemed sale of everything you own, the day before you leave.
Budgeting
Popular50/30/20 Budget CalculatorSplit your paycheck into needs, wants, and savings.ACA Subsidy Cliff CalculatorOne extra dollar past 400% of FPL costs your whole subsidy.COBRA vs ACA Marketplace CalculatorSame plan at a higher price, or a new plan with a subsidy.Dependent Care FSA vs Child Tax Credit OptimizerYou can't double-dip, but the right order saves the most.Emergency Fund CalculatorFind out how much of a safety net you need.HSA vs FSA vs Limited-Purpose FSA CalculatorThe only account with a triple tax advantage, if you're eligible.Inflation CalculatorSee what today's dollar is worth years from now.Net Worth CalculatorAdd up what you own, subtract what you owe.
50/30/20 Budget Calculatore.g. $5,000 pay50/30/20 splitBudgetingACA Subsidy Cliff Calculatore.g. $65K MAGI, household of 2subsidy at riskBudgetingCOBRA vs ACA Marketplace Calculatore.g. 6 months of coveragetotal cost, COBRA vs subsidized ACABudgetingDependent Care FSA vs Child Tax Credit Optimizere.g. $8,000 care coststhe optimal FSA + credit combinationBudgetingEmergency Fund Calculatore.g. $4,000 expenses6mo targetBudgetingHSA vs FSA vs Limited-Purpose FSA Calculatore.g. $3,000 expensestax savings across all three account typesBudgetingInflation Calculatore.g. $10,000 today$13.4K in 10 yrsBudgetingNet Worth Calculatore.g. $250K assets, $150K debt$100K net worthBudgeting
50/30/20 Budget CalculatorSplit your paycheck into needs, wants, and savings.ACA Subsidy Cliff CalculatorOne extra dollar past 400% of FPL costs your whole subsidy.COBRA vs ACA Marketplace CalculatorSame plan at a higher price, or a new plan with a subsidy.Dependent Care FSA vs Child Tax Credit OptimizerYou can't double-dip, but the right order saves the most.Emergency Fund CalculatorFind out how much of a safety net you need.HSA vs FSA vs Limited-Purpose FSA CalculatorThe only account with a triple tax advantage, if you're eligible.Inflation CalculatorSee what today's dollar is worth years from now.Net Worth CalculatorAdd up what you own, subtract what you owe.