The Business Laws Behind Your Year-Round Tax Plan
BusinessTaxSaver is about planning a small business's taxes through the whole year. Tax choices rarely stand alone. The entity you pick, the people you pay, the goods you sell and the records you keep are all shaped by laws outside the tax code too. This section gives short pages on twelve of those laws, each read through a tax planner's eyes, with the year behind every figure.
Three layers fit together. Federal laws apply across the country: the Internal Revenue Code and payroll taxes, wage and hour and workplace safety rules, ownership reporting, and background checks for hiring. Illinois laws apply to Illinois businesses and workers: how an LLC or corporation is formed and kept in good standing, state income tax, sales and use tax, and wage payment. Cook County rules apply to work in Cook County, and this section covers its paid leave ordinance. One business can sit under all three at once, and Chicago and some suburbs add rules of their own.
The pages are general information from a CPA firm, not legal advice, and we are not a law firm. Laws, rates and thresholds change, so each page lists its official sources and the date we reviewed it. Questions about a specific legal situation belong with an attorney. Our policies page has the full notice.
Looking for the planning side first? Start with year-round tax planning, choosing a business structure or the compliance calendar, then come back here for the law behind each decision.
Federal
- How the Internal Revenue Code Shapes a Year-Round Tax Plan
The Internal Revenue Code for small business owners: how entities are taxed, 2026 Section 179 and QBI figures, 1099 limits, due dates and record rules.
- FICA and Payroll Taxes Through the Year
FICA payroll taxes for small business owners: Social Security and Medicare rates, the 2026 wage base, S corporation owner pay, deposits and penalties.
- What the FLSA Means for a Small Business Payroll
The Fair Labor Standards Act for small business owners: federal minimum wage, overtime, the $684 exempt salary level, contractor status and tax tie-ins.
- Beneficial Ownership Reporting and Your Entity Choice
The Corporate Transparency Act for small business owners: why Illinois LLCs and corporations no longer file BOI reports, who still does, penalties and dates.
- OSHA and the Tax Side of Workplace Safety
OSHA safety rules for small business owners: who is covered, 2026 penalty maximums, injury reporting deadlines and how safety costs and fines are taxed.
- Hiring Your First Employees: Background Check Rules
The Fair Credit Reporting Act for small employers: written consent, adverse action steps, damages, Illinois limits on credit and criminal checks, disposal.
Illinois
- Forming and Keeping an Illinois LLC in Good Standing
The Illinois Limited Liability Company Act for owners choosing an entity: 2026 filing fees, annual report timing, liability, taxes and professional LLCs.
- Corporate Formalities and Franchise Tax for Tax Planners
The Illinois Business Corporation Act for owners weighing C or S status: 2026 filing fees, annual report, franchise tax exemption, directors and tax rates.
- Illinois Income Tax Rates and Dates for Business Planning
The Illinois Income Tax Act for business owners: 2026 rates by entity, the pass-through entity tax, estimated payments, withholding and late penalties.
- Illinois Sales and Use Tax Through the Business Year
Illinois sales tax for small business owners: Retailers' Occupation Tax and Use Tax, 2026 rates, resale certificates, remote sellers, returns and penalties.
- Paydays, Final Pay and Deductions in Illinois
The Illinois Wage Payment and Collection Act for employers: paydays, final pay, deductions, pay stubs, penalties and how it fits payroll tax planning.
Cook County
- Paid Leave in Cook County: What Owners Track
The Cook County Paid Leave Ordinance for employers: coverage, 1 hour of leave per 40 worked, use after 90 days, payout rules, penalties and state law.