Business Tax & Bookkeeping

Reconcile one pay statement exactly from its printed gross pay, tax withholding, pre-tax deductions, and after-tax deductions.

Estimate US federal income tax for 2025–2026. See federal tax owed, effective and marginal rates, and after-tax income by filing status.

Allocate exactly 100% of monthly income, compare non-negative actual spending, expose fixed-dollar extras, and review transparent balances and planning ratios.

Simple in-browser notepad with auto-save. Write quick notes that persist in your browser. Download as text file. No signup needed.

Calculate a simplified US home-office deduction by month, or allocate eligible renter expenses, with business-income limits and saved cases.

Model the standard Schedule SE Social Security and Medicare components from explicit current factor, wage-base, wage, and rate inputs.

Allocate a current Form 1040-ES annual payment target after expected withholding, applicable credits, and confirmed estimated payments already made.

Calculate monthly side-business cash surplus, a chosen reserve and returns per recorded hour. Keep losses visible and save documented comparisons.

Separate gig cash flow from annual mileage deductions and standard-method SE tax, with dated 2025–2026 rates, wage caps and recorded working hours.

Compare two complete quotes by dividing each total cost by its whole-unit quantity, with a signed per-unit difference and no invented scale assumptions.

Include unit costs, order costs and payment fees in a contribution-based price floor, then test operating profit and minimum whole-order sales targets.

Calculate gross profit and operating profit or loss from net revenue, cost of sales, and operating expenses for one consistent period.

Itemize launch costs and deposits, compare committed funding, then model monthly cash balances and the upfront cash needed to maintain a chosen floor.