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Guides · US Tax

US Tax guides

743 plain-English guides on us tax, each one ending in what to do next.

All Cross-BorderUS TaxCanadian TaxSmall Business & BookkeepingCFO & AdvisoryTax Planning

Page 11 of 31, newest first.

US Tax

Locksmith Estimated Taxes: Quarterly Payments and Emergency Call Planning

Mobile locksmiths must make quarterly estimated tax payments. Revenue is relatively steady year-round (unlike seasonal trades).

Sep 5, 2026
US Tax

Tax Deductions for Marketing Agencies: Software, Advertising, Client Acquisition, and Overhead

Marketing agencies deduct software subscriptions, client acquisition costs, subcontractor payments, advertising spend (the agency's own).

Sep 5, 2026
US Tax

Marketing Agency Entity Structure: S-Corp, the Consulting SSTB Risk, and QBI Planning

Marketing agencies face an SSTB classification question: is the agency providing consulting (SSTB) or creative/execution services (non-SSTB)?

Sep 5, 2026
US Tax

Estimated Taxes for Marketing Agency Owners: Retainer Revenue, Project-Based Income, and the SSTB Threshold

For agencies with 60%+ revenue from retainers, the prior-year safe harbor is the simplest estimated tax approach: four equal payments based on last.

Sep 5, 2026
US Tax

Retirement Plans for Marketing Agency Owners: Solo 401(k) with a Contractor Model

Marketing agency owners who use 1099 subcontractors instead of employees can maintain the Solo 401(k). An agency owner with no W-2 employees uses the Solo.

Sep 5, 2026
US Tax

Marketing Agency Subcontractor Management: 1099 Freelancers, Platforms, and the W-2 Wage QBI Trade-Off

Marketing agency subcontractor payments are deductible and reduce QBI. How 1099 freelancer management, platforms, and the W-2 wage trade-off work.

Sep 5, 2026
US Tax

Massage Therapy Deductions: Supplies, Equipment, and Home Studio Expenses

Massage therapists can deduct massage tables, linens, oils, lotions, continuing education, liability insurance, and home studio expenses.

Sep 5, 2026
US Tax

Massage Therapy Business Entity Structure: SSTB Classification, S-Corp Election, and QBI Phase-Out

Massage therapy is a specified service trade or business (SSTB) under IRC 199A because it falls under health care. Massage therapy tax planning.

Sep 5, 2026
US Tax

Massage Therapy Estimated Taxes: Quarterly Payments, Tip Reporting, and Safe Harbors

Massage therapists must include cash tips in estimated tax calculations. The 30% set-aside rule covers SE tax and income tax.

Sep 5, 2026
US Tax

Mobile Auto Detailing Deductions: Equipment, Products, and Ceramic Coating Expenses

Mobile auto detailing has 65-80% margins with very low product costs (5-12%). Mobile auto detailing deductions: Equipment (moderate startup cost): - DA.

Sep 5, 2026
US Tax

Mobile Auto Detailing Business: LLC vs. S-Corp Tax Structure

Mobile auto detailing is NOT a specified service trade or business (SSTB). S-Corp election makes sense at $55,000-$65,000 in net profit.

Sep 5, 2026
US Tax

Mobile Auto Detailing Estimated Taxes: Seasonal Revenue and Quarterly Payments

Mobile auto detailing is moderately seasonal (peaks April-September, especially in northern markets). Ceramic coating work fills winter months.

Sep 5, 2026
US Tax

Mobile Car Wash Tax Deductions: Vehicle, Equipment, and Chemical Expenses

Mobile car wash deductions center on the vehicle/rig setup ($10,000-$40,000, Section 179 eligible if over 6,000 lbs), pressure washer and equipment.

Sep 5, 2026
US Tax

Mobile Car Wash Business: LLC vs. S-Corp, Tax Structure, and QBI Deduction

Mobile car wash businesses qualify for the full 20% QBI deduction at any income level. How the S-corp election cuts self-employment tax.

Sep 5, 2026
US Tax

Mobile Car Wash Estimated Taxes: Seasonal Planning and Quarterly Payments

Mobile car wash businesses have mild seasonality (1.5-2x peak-to-trough ratio in most markets). Seasonal revenue pattern (four-season market).

Sep 5, 2026
US Tax

Mobile Car Detailing Business Deductions: Supplies, Equipment, and Vehicle Expenses

Mobile detailers deduct ceramic coatings, polishing compounds, extraction equipment, water tanks, generators, and vehicle expenses.

Sep 5, 2026
US Tax

Mobile Car Detailing Business Entity Structure: S-Corp Election, Equipment Deductions, and Non-SSTB QBI

Mobile car detailing businesses are NOT specified service trades or businesses (SSTBs), preserving the full QBI deduction.

Sep 5, 2026
US Tax

Mobile Car Detailing Estimated Taxes: Quarterly Payments and Cash Flow Management

Mobile detailers with cash and digital payment income must track all revenue for estimated tax purposes. Mobile detailing estimated tax planning: 1.

Sep 5, 2026
US Tax

Mobile Notary Tax Deductions: Vehicle, Supplies, and Signing Agent Expenses

Vehicle expenses are the dominant deduction for mobile notaries (30-50% of revenue). Mobile notary deductions: Vehicle expenses (the big one): - Standard.

Sep 5, 2026
US Tax

Mobile Notary Business: LLC, S-Corp, or Sole Proprietor?

Mobile notaries are NOT an SSTB under IRC 199A (notarization is a ministerial act, not a professional service). Entity structure comparison for mobile.

Sep 5, 2026
US Tax

Mobile Notary Estimated Tax Payments: Quarterly Planning Guide

Mobile notaries are self-employed and must make quarterly estimated tax payments. Income is moderately seasonal (real estate closings peak spring-summer).

Sep 5, 2026
US Tax

Moving Company Deductions: Fuel, Insurance, Equipment, and Packing Supplies

Moving companies deduct fuel, commercial auto insurance, packing supplies as COGS, and equipment under Section 179. Deductible expenses for moving.

Sep 5, 2026
US Tax

Moving Company Tax Guide: Entity Structure, Vehicle Deductions, and Worker Classification

Moving companies are not SSTBs, making the full QBI deduction available. Heavy-duty trucks qualify for full Section 179 deduction.

Sep 5, 2026
US Tax

Estimated Taxes for Moving Companies: Managing Seasonal Revenue Spikes

Seasonal estimated tax strategies for moving companies: 1. Equal quarterly payments (safe harbor method): Pay 100% of prior.

Sep 5, 2026