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Be sure to include all income sources when creating your small business checklist. This could include income from your day-to-day operations as well as any investment or secondary income.

Gross receipts from sales or services

Sales records for accrual-based taxpayers (accounts receivable)

Returns and allowances

Business checking/savings account interest (1099-INT or statement)

1099-NEC (independent contractor or professional services work), 1099-K, or W-2 income

Other income, including rental income, federal and state gasoline or fuel tax credit or refund

Some categories may not apply each tax season, so you should only include what applies for 2025 on your small business tax checklist. If you produce, purchase, or sell merchandise in your trade or business, you’ll need to take your inventory into account at the beginning and end of the year.

Beginning inventory total dollar amount

Inventory purchases

Ending inventory total dollar amount

Items removed for personal purposes

Materials and supplies

A wide range of costs can fall under applicable business expenses. Don’t miss recording any of these on your small business tax preparation checklist. Our tax pros will help you find each and every deduction you deserve.

Advertising

Business telephones

Computer & internet expenses for business use

Transportation and travel expenses

• Local transportation: Did you take any business trips this year? You’ll want to include your mileage along with any car and truck expenses. For public transportation, parking and tolls, you should include the contemporaneous log for mileage. Public transportation, parking and tolls are receipts.
• Travel away from home: You should account for actual expenses if you drove — or airfare for any flights. There are helpful app-based trackers available so you can keep up while you’re on the go. Be sure to include costs for hotels; meals and tips; and taxi fares and tips. Remember to include any miscellaneous expenses, such as your internet access (hotel, internet café, etc.).

Commissions and fees

Contract labor expenses paid to subcontractors and independent contractors

Depreciation

• Cost and first date of business use of assets
• Records relating to personal use of assets
• Sales price and disposition date of any assets sold
• Documentation of prior-year depreciation

Amortization of intangible assets (e.g., patents or copyrights held)

Business insurance

• Casualty loss insurance
• Errors and omissions
• Other

Interest expense

• Mortgage interest on building owned by business
• Business loan interest
• Investment expense and interest

Professional fees

• Lawyers, accountants, and consultants
• Tax preparers

Office supplies

• Pens, paper, staples, and other consumables

Rent expense

• Office space rent
• Business-use vehicle lease expense
• Other

Office-in-home

• Square footage of office space
• Total square footage of home
• Hours of use, if operating an in-home daycare
• Mortgage interest or rent paid
• Homeowner’s or renters’ insurance
• Utilities
• Cost of home, cost of separate improvements and first date of business use

Wages paid to employees

Employee benefit expenses

Health insurance: Whether you’re a sole-proprietor who is covering their family, a partner or you have S corporation shareholders, you’ll want to account for premiums paid on behalf of those individuals. Also, you should gather information on your spouse’s employer provided insurance if applicable.

Other expenses

• Repairs, maintenance of office facility, etc.
• Estimated tax payments made (including property taxes and sales taxes if applicable)
• Other business-related expenses

Make sure you’ve completed all related tax issues such as:

File Forms 1099-NEC and Form 1096

File Forms W-2 and Form W-3

File federal and state payroll returns (Form 940, 941)

Make sure you’ve gathered related information such as:

Any financial statements generated by the business such as a balance sheet, profit/loss statement or cash flow statement

Completed year-end books

Information regarding NOLs

Any information regarding electric vehicle purchases or energy efficient improvements made

Any information related to natural disasters such as losses suffered and insurance payments received

Copy of the partnership (or LLC) agreement with any amendments

List of federal and state tax employer identification numbers (EINs)

Last year’s Form 1065 and Schedules K-1 and any state or local returns

Name, address and SSN/EIN of each partner during the year

Each partner’s ownership percentage including their profit and loss percentage if different

Information regarding capital contributions, distributions or other financial transactions involving a partner

Information regarding:

• each partner’s share of liabilities
• guaranteed payments made to any partner
• any insurance plan provided to any partner
• any liquidating payments made to any partner
• any change in ownership percentages including the addition or loss of partners

IRS acceptance letter of S election or previously filed Form 2553

A copy of the business’ bylaws and articles of incorporation

• If an LLC taxed as an S corporation, copies of the LLC articles of organization and operating agreement

List of federal and state employer identification numbers (EINs)

If the corporation used to be a C corporation, any information carried over after converting to an S corporation

Last year’s Form 1120S and Schedules K-1 and any state or local returns

Name, address and SSN/EIN of all shareholders during the year

The number of shares that each shareholder owns

Information regarding any:

• capital contributions, distributions or loans to shareholders
• reasonable compensation paid to any employee/shareholder
• insurance plan provided to any shareholder
• changes in ownership throughout the year

Articles of Incorporation and bylaws (or operating agreement for an LLC taxed as a C corporation)

• If an LLC taxed as a C corporation, copies of the articles of organization and operating agreement

Form 8832 if the entity has chosen to be taxed as a C corporation using the check-the-box regulations

List of federal and state employer identification numbers (EINs)

Any granted credit certificates

Last year’s Form 1120 including any schedules of carryover losses, deductions or credits from prior years and any state or local returns

Information regarding any dividends paid or received

Information regarding the corporation’s accumulated earnings account

Information regarding any business reorganization or change in ownership that happened during the year

Information about any shareholder owning 20% or more of the company’s stock

Information regarding the number of shares outstanding

Information regarding any distributions of cash or property to shareholders