Quarterly Tax Calculator Spreadsheet (Google Sheets & Excel)
Take control of self-employed taxes — calculate Q1–Q4 estimated tax vouchers, itemize Schedule C deductions, model SE tax, and eliminate IRS penalties.

A small business expense tracker, a bookkeeping template and an invoice template for Google Sheets, all in one place. These are the spreadsheets a solo operator actually needs at tax time: income and costs categorised the way a Schedule C expects, profit and loss that totals itself, mileage and sales tax logged as you go, and rental income kept separate from everything else.
21 templates below. Every spreadsheet comes in Google Sheets and Excel with light and dark themes, and downloads instantly.
Take control of self-employed taxes — calculate Q1–Q4 estimated tax vouchers, itemize Schedule C deductions, model SE tax, and eliminate IRS penalties.

Take control of healthcare costs — reconcile medical bills against insurance EOBs, track deductible progress, manage claims, and maximize HSA tax receipts.
Navigate probate with ease — track asset inventories, creditor claims by statutory priority, court accounting, and residuary beneficiary shares.

Scale your creator business with multi-platform editorial calendars, brand sponsorship CRMs, revenue ledgers, and 1-to-8 repurposing matrices.

Underwrite any rental deal in ninety seconds — cap rate, cash-on-cash, DSCR and cash flow with vacancy, management, maintenance and CapEx reserves already charged.

Underwrite wholesale real estate deals in seconds with 70% rule MAO formulas, itemized repair estimators, cash buyer CRMs, and assignment trackers.

Master your developer API bills with multi-model pricing benchmarks, prompt tokenizers, agent loop forecasters, and prompt caching math.

Run your entire freelance business in one place — manage client pipelines, track billable hours, generate invoices, and automate annual P&L taxes.

Generate professional client invoices in seconds and eliminate overdue payments with an automated 5-tier accounts receivable aging radar.

Take complete control of client deliverables, project phases, and operational budgets with an automated command dashboard.
Run your short-term rentals like a business — track revenue, occupancy %, ADR, and Schedule E tax summaries automatically.
Know what to charge to hit your target profit margin after materials, labor, shipping, and payment fees.

Simple, powerful bookkeeping for sole proprietors, freelancers, and small businesses with zero accounting background required.

Create professional, accurate construction estimates, calculate job profit margins, and generate clean client proposals.

The essential all-in-one financial toolkit for side hustlers, makers, and sole proprietors starting a small business.

Manage your long-term rental properties like a pro — track rent rolls, tenant leases, maintenance expenses, and Cap Rates.

Freelance Income Tracker, 1099 Tax Estimator & Client Pipeline

Career Application Pipeline, 5-Day Follow-Up Radar & Offer Evaluator

COGS Tracker, Multi-Platform Fee Calculator & Stale Stock Radar

Deal Flow Tracker, 5-Day Follow-Up Radar & Retainer Capacity Planner

Unit Economics, Target Margin Solver & Offsite Ads Stress Tester

Several templates have a free lite version — no card needed.
Browse the free templates