#sole-proprietorship
Sole proprietorship accounting, tax filing, and financial management essentials
Form 4868 gives a sole proprietor an automatic six-month extension to file Form 1040 and Schedule C — moving the 2025 return deadline from April 15 to October 15, 2026 — but the tax itself was still due in April. How to estimate total liability including self-employment tax, request the extension electronically or through a designated payment, and limit the 5%-per-month failure-to-file penalty.
H.R. 8415 would raise the Section 199A qualified business income deduction from 20% to 23% — an extra $3,000 of deduction on $100,000 of QBI, worth $660 to $960 in tax depending on your bracket. Here is how the deduction works in 2026 after OBBBA made it permanent, which W-2 wage and SSTB limits still apply, and how to keep books that support the number you claim.
Sole prop is the default, LLC is the wrapper, S-corp saves SE tax above ~$80K but needs payroll, C-corp is the venture clock — and converting the wrong way can be a taxable liquidation.
Poland's sole proprietors must pick between ryczałt (2–17% on revenue), skala podatkowa (12%/32% on income), and podatek liniowy (flat 19%) by February 20, 2026. This guide compares the 2026 rules — including the health contribution jump to a 100% minimum-wage assessment base — and shows which regime fits low-expense freelancers versus high-cost contractors.
Form T2125 turns a Canadian sole proprietor's invoices and receipts into taxable net business income on the T1 return. For 2026, gig platforms report earnings directly to the CRA, self-employed CPP totals nearly $9,300 at the earnings ceiling, and the June 15 filing extension still leaves payment due April 30.
Irish sole traders filing Form 11 in 2026 face a mid-year PRSI Class S rise from 4.2% to 4.35% on October 1, a €650 minimum PRSI charge, and the preliminary tax rule requiring 100% of prior-year or 90% of current-year liability by October 31 — with a ROS extension to mid-November for those who file and pay online.
Australian sole traders who invoice without an ABN lose 47% of each payment to mandatory withholding. This guide covers free same-day ABN registration, the $75,000 rolling 12-month GST threshold, quarterly BAS due dates, individual marginal tax rates for 2026-27, deductible super contributions, and the ATO's five-year record-keeping rule.
A Swiss freelancer's tax bill stacks federal (up to 11.5%), cantonal, and communal layers — roughly CHF 15,000–18,000 on CHF 100,000 of profit in Zug versus about CHF 28,000 in Geneva. This guide covers AHV self-employed status (three criteria, ~10% of net profit, CHF 2,300 registration threshold), the CHF 100,000 VAT and Commercial Register line, 8.1% standard VAT, Pillar 3a deductions up to CHF 36,288, and when a GmbH beats a sole proprietorship.
Mixing personal and business money in one account can void your LLC's liability shield, get legitimate deductions disallowed for lack of substantiation under IRC Section 162, and turn a routine audit into a full transaction pull. Here's what commingling looks like, why courts and the IRS punish it, and a five-step cleanup plan.
A 2026 bookkeeping guide for personal and private chefs covering ASC 606 principal-vs-agent grocery treatment, the 72.5¢ standard mileage rate, Section 179 equipment, cottage food law constraints, and quarterly estimated tax safe harbors for Schedule C filers.
Section 162(l) lets sole proprietors, partners, and more-than-2% S-corp shareholders deduct 100% of medical, dental, vision, and long-term care premiums above the line on Schedule 1, Line 17—if they clear the earned-income cap, the spouse-employer rule, and the W-2 reporting choreography on Form 7206.
Section 162(l) lets self-employed taxpayers deduct 100% of medical, dental, vision, Medicare, and long-term care premiums above the line via Form 7206.
