One place to work through the numbers.
88 transparent planning tools, organized around the decision in front of you—not the form you happen to know.
All calculators
88 tools shown
2026 401(k) contribution planner
Estimate employee deferrals, per-paycheck savings and a plan-specific employer match.
Salary and paycheck estimator
Convert annual salary into gross and simplified net-pay estimates using rates you control.
2026 Traditional and Roth IRA planner
Calculate shared IRA contribution room and compare current-versus-future tax-rate context.
Quarterly estimated tax planner
Split an expected balance into installments and compare a simplified federal safe-harbor target.
2026 home office and mileage estimator
Estimate simplified home-office and split-period business mileage amounts, then compare entered actual costs.
RSU withholding gap planner
Compare estimated tax on vested RSU income with shares or cash withheld, then plan a review amount.
High-income tax projection
Build a directional household projection from wages, equity, business, investment, deductions, and credits.
Rental-loss usability screener
Screen whether entered rental losses may be limited by basis, at-risk, passive-activity, or income assumptions.
Cost-segregation feasibility planner
Compare a rough accelerated-depreciation scenario with a conventional building schedule.
ISO exercise and AMT planning screen
Estimate the ISO bargain element and a directional alternative-minimum-tax exposure before exercising.
ESPP disposition analyzer
Compare a qualifying and disqualifying disposition using entered purchase, grant, and sale facts.
Concentrated stock exposure planner
Show household concentration, downside scenarios, and a directional tax-aware sale budget.
Qualifying child and dependent evidence screener
Walk through relationship, age, residency, support, and joint-return facts before claiming a dependent or child credit.
1098-T and education-credit evidence planner
Organize tuition, scholarships, enrollment, and 1098-T records before testing education credits.
2026 Roth 401(k) contribution planner
Estimate after-tax Roth deferrals and remaining employee contribution room.
Employer 401(k) match calculator
Translate a common matching formula into employee and employer dollars.
2026 HSA contribution planner
Estimate remaining HSA room for self-only or family coverage.
Health FSA election planner
Translate an annual health FSA election into paycheck reductions and an estimated tax effect.
Social Security claiming comparison
Compare a stated full-retirement-age benefit across simplified claiming ages.
Required minimum distribution estimator
Divide a prior year-end account balance by the entered IRS life-expectancy factor.
Compound interest calculator
Project a starting balance and recurring monthly contributions.
Debt payoff calculator
Estimate payoff time and interest for a fixed monthly payment.
Mortgage payment calculator
Estimate principal-and-interest payment plus entered housing costs.
Mortgage refinance break-even calculator
Compare current and proposed principal-and-interest payments and closing-cost recovery.
Capital gains tax budget planner
Estimate gain after entered losses and a cautious combined tax budget.
2026 self-employment tax estimator
Estimate Social Security and Medicare portions from Schedule C profit.
S corporation break-even comparison
Compare a simplified sole-proprietor model with an S corporation wage, payroll, state-tax, retirement-contribution and administration assumptions.
Small-business retirement plan selector
Compare a simplified SEP IRA, SIMPLE IRA and solo 401(k) fit using owner status, staff, contributions and administration.
Accountable plan reimbursement organizer
Estimate documented employee or owner business reimbursements for mileage, supplies, phone and home-office costs.
Employer payroll cost estimator
Estimate gross payroll plus entered employer tax and benefit rates.
Sales tax calculator
Calculate tax to add or back tax out of a tax-inclusive total.
2026 business mileage calculator
Apply the two official 2026 business mileage rates to separately entered miles.
Straight-line depreciation estimator
Create a simple annual and monthly straight-line depreciation estimate.
Business startup cost estimator
Estimate the common initial deduction and remaining amortizable startup costs.
Bookkeeping cleanup effort estimator
Scope transaction cleanup, reconciliation and review time.
Nonprofit Form 990 filing selector
Screen Form 990-N, 990-EZ, 990, 990-PF, 990-T and fiscal-year filing context while flagging organization-type exceptions.
Foreign account and FBAR screener
Screen the aggregate maximum value of foreign financial accounts against the basic FBAR threshold.
Savings goal calculator
Estimate the monthly savings needed to reach a target.
Emergency fund target calculator
Build a reserve target from essential monthly costs.
Auto loan payment calculator
Estimate fixed monthly payment and total interest.
Student loan payment estimator
Estimate standard amortized payment and an entered extra-payment scenario.
Credit card payoff calculator
Estimate payoff under a fixed monthly payment.
Rental property cash-flow estimator
Estimate monthly cash flow and simple cash-on-cash return.
Business break-even calculator
Estimate units and revenue needed to cover fixed costs.
Gross margin calculator
Calculate gross profit, margin and markup.
Business cash runway calculator
Estimate months of runway from cash and net monthly burn.
Inventory turnover calculator
Estimate turnover and days inventory held.
Charitable giving tax-context estimator
Apply an entered deductible percentage and marginal rate to a contribution.
Education credit screener
Compare entered qualified expenses with headline AOTC and LLC formulas before eligibility review.
Tax withholding gap estimator
Compare expected total tax with withholding and payments.
Business loan payment calculator
Estimate fixed debt service and a simple debt-service coverage ratio.
LLC, S corporation, and C corporation tax comparison
Compare user-controlled tax assumptions across three common business tax models.
Startup formation cost planner
Organize one-time formation costs and the first year of recurring compliance costs.
Gig worker quarterly tax estimator
Estimate income and self-employment tax from gig receipts and business expenses.
529 plan vs. Trump Account comparison
Compare contribution projections while keeping the accounts’ different purposes and access rules visible.
2026 HSA eligibility and contribution estimator
Screen eligible months and estimate prorated HSA contribution room.
2026 Medicare IRMAA estimator
Screen 2026 Part B and Part D income-related adjustments using entered MAGI and filing status.
Student loan accelerated payoff calculator
Compare scheduled repayment with a fixed extra-payment strategy.
Income stacking tax estimator
Layer ordinary income and investment gains using transparent user-entered marginal rates.
2026 Section 179 eligibility and phaseout planner
Screen business use, placed-in-service spending, income, and the 2026 Section 179 phaseout.
Home sale gain and exclusion estimator
Estimate adjusted gain and screen the common $250,000 or $500,000 main-home exclusion.
Rental and Airbnb expense allocation estimator
Allocate shared property costs between rental and personal-use days.
Tax-loss harvesting estimator
Model how an entered harvested loss could offset gains and a limited amount of ordinary income.
Wash-sale risk screener
Screen replacement timing and substantially identical holdings around a loss sale.
Capital-loss carryover estimator
Apply entered prior carryovers against current gains and the common annual ordinary-income limit.
Business vehicle deduction comparison
Compare 2026 standard mileage with an entered actual-cost business allocation.
Business deduction myth selector
Choose a common deduction claim and see the records and rule questions it actually raises.
2026 Social Security earnings test estimator
Estimate benefits potentially withheld when working before full retirement age.
Social Security claiming break-even calculator
Compare two claiming ages and entered monthly benefit estimates.
Taxable Social Security benefits estimator
Estimate the federal portion of benefits included in income using provisional-income thresholds.
RMD and qualified charitable distribution planner
Estimate an RMD and show how an entered QCD could satisfy part of it.
Railroad Retirement Tier I and Tier II planner
Combine entered Tier I, Tier II, supplemental, and withholding amounts for a planning view.
FERS and CSRS annuity estimator
Apply the standard entered-service formulas to a high-3 salary estimate.
FEHB and Medicare premium coordination planner
Compare entered FEHB premiums with Medicare Part B and Part D/IRMAA amounts.
2026 Earned Income Tax Credit eligibility screener
Screen earned income, AGI, qualifying children, filing status, SSNs, and investment income against 2026 headline EITC rules.
Federal filing status evidence selector
Organize year-end marital status, household costs, qualifying-person, and surviving-spouse facts before selecting a federal filing status.
2026 dependent care credit and FSA comparison
Compare an entered credit-rate estimate with the potential tax effect of dependent-care FSA benefits, without double counting the same expenses.
Final return and estate filing checklist
Flag final individual-return, post-death income, fiduciary-return, and estate-administration evidence for review.
Disabled dependent evidence screener
Organize disability, relationship, residency, income, support, and joint-return facts for qualifying-child or qualifying-relative review.
State move and part-year residency organizer
Organize move timing, days, domicile evidence, and income location for a state-by-state residency review.
FBAR and Form 8938 foreign-asset screener
Inventory foreign accounts and assets to identify which U.S. information-return reviews may be needed.
Foreign gift and inheritance reporting screener
Organize gifts, inheritances, foreign estates, and transfers received by a U.S. person.
Foreign mutual fund and PFIC risk screener
Flag foreign pooled investments that may require Form 8621 and specialist tax review.
Foreign-property sale tax organizer
Prepare basis, sale proceeds, foreign tax, currency, residency, and reporting records for property outside the United States.
Cryptocurrency tax organizer
Organize wallet transfers, sales, swaps, staking, mining, airdrops, basis, and Form 8949 records.
Business tax deadline calendar generator
Create a planning calendar for entity, payroll, sales-tax, estimated-tax, state, and information-return obligations.
Nonprofit revocation risk checker
Screen missed annual filings and IRS status signals before automatic exemption revocation becomes an emergency.
Nonprofit reinstatement pathway tool
Organize the facts and records needed to discuss postmark, streamlined, or reasonable-cause reinstatement options.
Clear inputs. Visible assumptions. A sensible next step.
Each tool separates a quick Basic estimate from Advanced context and explains what the result does not determine.