Notes on running a freelance business that actually pays.

Why bank balances and spreadsheets lie about freelance profitability, and the minimum-viable system for seeing which project actually earns — including a hours-to-margin walkthrough.

The exact spreadsheet structure, the four data points per project, and the allocation formulas — with a copyable template you can paste into Google Sheets.

When a single $50/mo VPS runs three projects, how do you allocate the cost fairly? IRS-acceptable methods, a worked example, and the mistakes that trigger audits.

Your billed rate is a headline number. Your real hourly rate — revenue divided by every working hour, billed or not — is usually 30–50% lower. Here's how to compute it and lift it.

What SE tax actually is, the full 15.3% breakdown, how to calculate it on $80k of net profit, why half is deductible, and the two legal ways to reduce it (including when S-Corp election starts saving real money).

The four IRS deadlines, the two safe-harbor rules that eliminate penalties, three methods to calculate each payment, and the five-minute quarterly ritual that keeps it boring.

Every Schedule C category a freelancer typically claims — ranked by tax savings, with the gotchas (50% meals, home office, mileage log requirements) and the three mistakes that draw audits.

Every IRS form a US freelancer is likely to receive or file in a typical year, with who sends what, when it's due, and the common mistakes to avoid.

Honest head-to-head: feature-by-feature comparison, pricing math at each tier, where SparkReceipt wins, where Hustlay wins, and the decision tree for picking between them.

The five patterns that push SparkReceipt users to switch, based on 47 Reddit threads — and what the data suggests about when staying is the right call.

QBSE was designed for 2014 Uber drivers, priced like enterprise software, and missing the multi-project view most modern freelancers need. Three lighter alternatives with the math.

FreshBooks' client-capped pricing punishes the exact freelancer profile most likely to use it. The math on a 12-client coaching business, and three alternatives that don't tax you for growth.

Hands-on test of SparkReceipt, Expensify, Shoeboxed, QuickBooks Self-Employed, and Hustlay across 120 receipts. Accuracy rates, speed, and category specificity compared.

The three defensible allocation methods for freelancer shared costs (time-weighted, revenue-weighted, equal-share), when to use each, edge cases (zero-revenue projects, wind-downs, big one-offs), and a worked three-stream example.

Profit-per-hour ranges across software, design, writing, marketing, creators, trades, and ecommerce. How to tell if your rate is healthy for your field and how to close the gap if it isn't.

The 60%-of-baseline rule for firing unprofitable clients, two fixes to try first (rate raise + scope tightening), and the exact email templates for a professional exit.

A developer side hustle tracker should show net profit, shared costs, and profit per hour so you can see which projects actually pay off.