Form 1040: The main individual tax return

Form 1040 is the standard individual income tax return used by most taxpayers. As a business owner in Florida, your personal and business taxes are combined on this one form.

Here is how the form works for business owners:

Page 1: Basic information — your name, filing status, dependents, and standard or itemized deduction selection.

Page 2: Income and tax calculation — total income, adjusted gross income (AGI), taxable income, and total tax liability.

Supporting schedules: Your business income is not directly entered on Form 1040. Instead, it is calculated on Schedule C and then transferred to Schedule 1, which feeds into the main form.

Schedule C: Profit or Loss from Business

Schedule C is where you report your business income and expenses. This is the most important schedule for sole proprietors and single-member LLC owners.

Part I — Income: Enter your gross business revenue from all sources. This includes cash, credit card payments, checks, and digital payments like Venmo or PayPal (reported on Form 1099-K if over $5,000 in 2025).

Part II — Expenses: List all business expenses by category: advertising, car and truck, commissions, contract labor, depletion, depreciation, employee benefits, insurance, mortgage interest, legal/professional, office, pension plans, rent, repairs, supplies, taxes, travel, meals, utilities, and wages.

Part III — Cost of Goods Sold: If you sell products, calculate your cost of goods sold, including inventory, materials, labor, and overhead.

The result is your net profit or loss, which flows to Schedule 1, Line 3, and then to Form 1040, Line 8g.

Schedule SE: Self-Employment Tax

Schedule SE calculates your self-employment tax — the Social Security and Medicare taxes you pay as a business owner. This schedule is required if your net earnings from self-employment are $400 or more.

Short Schedule SE: Use this if your only self-employment income comes from a single business and you do not have wages subject to Social Security tax. Most Florida business owners qualify for the short form.

Long Schedule SE: Use this if you have multiple self-employment activities, have wages from an employer, or receive tips subject to Social Security.

The calculation: Net profit from Schedule C × 92.35% × 15.3% (12.4% Social Security + 2.9% Medicare). The result is your SE tax, which is added to your income tax on Form 1040.

Schedule 1: Additional Income and Adjustments

Schedule 1 serves as a bridge between business forms and your main Form 1040. It has two parts:

Part I — Additional Income: This is where your Schedule C net profit or loss is entered (Line 3). Other entries include: taxable refunds, alimony received, business income from partnerships or S corporations (Schedule K-1), and other reportable income.

Part II — Adjustments to Income (Above-the-line deductions): These deductions reduce your AGI and include: educator expenses, certain business expenses of reservists and performing artists, health savings account (HSA) deductions, moving expenses for armed forces, self-employed health insurance deduction, self-employed SEP/SIMPLE/Qualified plan contributions, and the deductible half of self-employment tax.

The total from Schedule 1 flows to Form 1040, Line 8 (Total income) or Line 10 (Adjusted gross income).

Florida-specific tax benefits on Form 1040

Living in Florida gives you some unique advantages when filing Form 1040:

No state income tax deduction: Because Florida has no personal state income tax, you cannot deduct state income tax as an itemized deduction. However, you can still deduct state and local sales tax instead of state income tax if you itemize. This is a benefit that Florida residents can use.

Standard deduction: For 2025 (filed in 2026), the standard deduction is $15,000 for single filers and $30,000 for married couples filing jointly. Many Florida business owners find the standard deduction sufficient, especially since they cannot deduct state income tax.

Homestead exemption: While this is a property tax benefit rather than an income tax benefit, Florida’s homestead exemption reduces your property tax burden and may allow you to keep more of your income.

No state-level Schedule C: In states with income tax, business owners often need to file a state-level version of Schedule C with different rules. In Florida, you do not have this additional filing burden.

How to prepare for filing Form 1040 as a business owner

Good preparation makes tax filing smoother. Here is what you need before filing your Form 1040 as a Florida business owner:

Income documentation: All 1099-NEC forms from clients, 1099-K forms from payment processors (if over $5,000), bank statements showing business deposits, and any other business revenue records.

Expense documentation: Receipts (physical or digital), credit card statements, mileage logs, and invoices for business expenses organized by category.

Other tax forms: W-2 forms if you also have wages, 1095-A if you have ACA Marketplace coverage, mortgage interest statements (Form 1098), and education expense forms (Form 1098-T).

Prior year return: Your prior year Form 1040 for reference, including your AGI needed for identity verification if e-filing.

Bookkeeping records: A profit and loss statement for your business summarizing the year’s income and expenses.