Small Business Tax Deductions Finder 2025 - S Corp, LLC & Sole Proprietor

Discover every available small business tax deduction you qualify for in the 2025 tax season. Whether you are looking for specific tax deductions for self employed freelancers, or require a detailed list of S Corp tax deductions, this interactive tool simplifies the process. We help you identify commonly missed tax deductions specific to your entity type to ensure you don’t overpay. Use our free calculator to estimate write-offs for professionals and business owners – covering home office costs, mileage, and other essential small business tax deductions backed by the latest IRS guidelines.

Find Your Small Business Tax Deductions by Entity Type

Select your business structure below to generate a personalized list of small business tax deductions. This step ensures you see the correct tax deductions for self employed individuals, partnerships, or the specific requirements for S Corp tax deductions.

Step 1: Choose Your Business Type

↑ Select Your Business Structure to Get Started 

Step 2: Review Tax Deductions for Self Employed Owners & Commonly Missed Tax Deductions

↓ Explore the expenses you qualify for, uncover commonly missed tax deductions that reduce your taxable income, and use our quick estimators to maximize your small business tax deductions. Once you’ve identified potential savings, our Tax Strategy and Preparation Services can help you implement these deductions correctly.

Commonly Missed Tax Deductions by Business Type

These are the tax deductions for self employed individuals and small business owners that are most frequently overlooked:

Schedule C Tax Deductions for Self Employed Sole Proprietors

Sole Proprietorships and Single-Member LLCs report tax deductions for self-employed individuals on Schedule C. Key small business tax deductions include:

View IRS Schedule C Instructions
Marketing & Sales
    Advertising $$$ High Value

    Costs associated with promoting your business, including online advertisements, printed flyers, business cards, or sponsorships of events. These expenses must be ordinary and necessary for your trade or business to qualify as deductible.

    Records to Keep:
    • Invoices and receipts from advertising vendors
    • Copies of ads, promotional materials, business cards
    • Digital ad platform statements (Google Ads, Facebook Ads)
    • Sponsorship agreements and proof of payment
    Commissions and fees $$ Medium Value

    Payments made to sales agents, referral partners, or online platforms for services like payment processing or brokerage fees, as long as they are directly related to generating business income.

    Records to Keep:
    • Commission agreements or contracts
    • 1099-NEC forms issued to recipients
    • Payment processor statements (PayPal, Stripe, Square)
    • Bank statements showing commission payments
Operations & Assets
    Repairs and maintenance $ Medium Value

    Costs to maintain and repair business assets in their current condition, without adding significant value or extending life.

    Records to Keep:
    • Repair invoices
    • Work descriptions
    Depreciation $$ High Value

    Deduction for the allocation of asset costs over time based on useful life and depreciation methods.

    IRS Publication 946 - Depreciation
    Records to Keep:
    • Asset purchase records
    • Form 4562
    Depletion $ Lower Value

    Deduction for the exhaustion of natural resources owned by the corporation.

    Rents $$ High Value

    Lease payments for business property, equipment, or vehicles used in operations.

    Records to Keep:
    • Lease or rental agreements
    • Monthly payment records
    • Landlord contact information
    Advertising $$ High Value

    Costs for promoting products or services through various media channels.

    Records to Keep:
    • Invoices from advertising vendors
    • Copies of promotional materials
    • Digital ad platform statements
Vehicle & Travel
    Car and truck expenses $$$ High Value

    Expenses for using vehicles in your business, either using the standard mileage rate or actual expenses like gas, repairs, and insurance.

    Note: Standard mileage rate for 2025: $0.70/mile

    Records to Keep:
    • Mileage log with dates, destinations, business purpose
    • Gas receipts and repair invoices if using actual expenses
    • Vehicle title or lease agreement
    • Business use percentage calculation
    Travel expenses $$$ High Value

    Costs for business travel away from your tax home, including airfare, lodging, and transportation, but not commuting.

    Records to Keep:
    • Travel itinerary with business purpose
    • Hotel and transportation receipts
    • Mileage for local transportation
    • Per diem calculations if used
    Business meals $$ Medium Value

    50% of costs for meals during business travel or with clients, provided the meal is not lavish and has a business purpose.

    Note: 50% deductible in 2025

    Records to Keep:
    • Receipts showing cost and place
    • Names of attendees and business relationship
    • Business purpose discussion notes
    • Documentation to separate entertainment costs (not deductible) from meals
Labor & Payroll
    Contract labor $$$ High Value

    Amounts paid to independent contractors or freelancers for work performed, such as graphic design or consulting. If payments exceed $600 per year to an individual, you must issue Form 1099-NEC.

    Records to Keep:
    • Contracts or agreements with contractors
    • Invoices from contractors
    • W-9 forms from all contractors
    • 1099-NEC forms issued (if over $600/year)
    • Proof of payment (canceled checks, bank transfers)
    Wages (less employment credits) $$$ High Value

    Salaries and wages paid to employees, reduced by any employment tax credits such as the Work Opportunity Tax Credit (WOTC).

    Records to Keep:
    • Payroll records and timesheets
    • W-2 forms issued to employees
    • Payroll tax deposits (Form 941)
    • Documentation for any employment credits claimed
Property & Equipment
    Depreciation and section 179 expense deduction $$$ High Value

    The cost of business assets like equipment or vehicles can be deducted over their useful life through depreciation, or you can elect to expense up to certain limits under Section 179. Bonus depreciation is available at 60% for qualified property placed in service in 2025.

    Note: Section 179 limit for 2025: $1,220,000

    IRS Publication 946 - Depreciation
    Records to Keep:
    • Purchase invoices with dates and amounts
    • Asset descriptions and serial numbers
    • Date placed in service
    • Business use percentage if also used personally
    • Form 4562 filed with tax return
    Repairs and maintenance $$ Medium Value

    Expenses for routine repairs and maintenance to keep business property in good working condition, but not for major improvements that add value.

    Records to Keep:
    • Invoices and receipts from repair services
    • Description of work performed
    • Date of service
    • Proof that expense maintains (not improves) property
    Rent or lease: Vehicles, machinery, and equipment $$ Medium Value

    Lease payments for vehicles, machinery, or equipment used in your business, prorated for business use if also used personally.

    Records to Keep:
    • Lease agreements
    • Monthly payment receipts or statements
    • Business use percentage documentation
    Rent or lease: Other business property $$$ High Value

    Rent paid for office space, retail locations, warehouses, or other real property used in the business.

    Records to Keep:
    • Lease or rental agreement
    • Monthly rent payment records
    • Landlord's name, address, and TIN (if required)
Professional Services & Overhead
    Legal and professional services $$ Medium Value

    Fees paid to attorneys, accountants, consultants, or other professionals for services directly related to your business operations or compliance.

    Records to Keep:
    • Invoices from professionals detailing services
    • Proof of payment
    • Description of business purpose
    Insurance (other than health) $$ Medium Value

    Premiums for business-related insurance policies, including liability, property, malpractice, or workers' compensation insurance. Personal insurance does not qualify.

    Records to Keep:
    • Insurance policy documents
    • Premium payment receipts
    • Policy declarations showing business coverage
    Office expense $ Lower Value

    Costs for office supplies such as paper, ink, pens, and software subscriptions; these are items that are consumed quickly and not considered capital assets.

    Records to Keep:
    • Receipts from office supply stores
    • Software subscription invoices
    • Credit card statements showing purchases
    Supplies $$ Medium Value

    Costs of materials and supplies directly used in your business operations, such as raw materials for manufacturing or cleaning supplies for a service business.

    Records to Keep:
    • Purchase receipts and invoices
    • Inventory records if applicable
    • Documentation linking supplies to business use
    Utilities $$ Medium Value

    Costs for utilities like electricity, water, heating, and internet service used in your business location.

    Records to Keep:
    • Monthly utility bills
    • Business use percentage if home-based
    • Internet and phone bills highlighting business use
Interest, Taxes & Benefits
    Interest: Mortgage (paid to banks, etc.) $$ Medium Value

    Interest payments on mortgages or loans secured by business property, such as an office building or warehouse.

    Records to Keep:
    • Form 1098 or lender statements
    • Loan documents showing business purpose
    • Payment records
    Interest: Other $ Lower Value

    Interest on other business debts, like credit cards used for business purchases or unsecured loans for operating expenses.

    Records to Keep:
    • Credit card statements showing business purchases
    • Loan agreements and payment schedules
    • Interest statements from lenders
    Taxes and licenses $$ Medium Value

    Business-related taxes, including state and local taxes, payroll taxes, and fees for licenses, permits, or certifications required to operate.

    Records to Keep:
    • Tax payment receipts and confirmations
    • Business license renewals
    • Permit applications and fees
    • Property tax statements for business property
    Employee benefit programs (other than pension/profit-sharing) $$ Medium Value

    Expenses for providing benefits to employees, such as health insurance premiums, group life insurance, or disability insurance, excluding retirement plans.

    Records to Keep:
    • Benefit plan documents
    • Premium payment receipts
    • Employee eligibility records
    Pension and profit-sharing plans $$$ High Value

    Contributions made to qualified retirement plans for employees, including SIMPLE IRAs, SEP IRAs, or 401(k) plans.

    Records to Keep:
    • Plan documents and adoption agreements
    • Contribution records and confirmations
    • Employee deferral elections
    • Form 5500 if applicable
    Depletion $ Lower Value

    Deduction for the reduction in value of natural resources like oil, gas, or timber extracted from property. You can use either the cost depletion or percentage depletion method, depending on what provides the greater benefit.

    Note: Applies to natural resource extraction businesses

    Records to Keep:
    • Property acquisition costs and basis
    • Units extracted or sold during the year
    • Calculation worksheets for cost or percentage depletion method
    Energy efficient commercial buildings deduction $$ Medium Value

    A deduction of up to $0.54 to $1.08 per square foot for installing energy-efficient systems in commercial buildings, based on the level of energy savings achieved.

    IRS Information on Energy Efficient Buildings
    Records to Keep:
    • Certification from qualified professional
    • Installation invoices and costs
    • Energy savings calculations
    • Building square footage documentation

Other Small Business Tax Deductions (Common Expense Examples)

    Amortization $ Lower Value

    The gradual deduction of costs for startup expenses, organizational costs, or intangible assets over a period of time, typically 15 years for startup costs.

    Records to Keep:
    • Documentation of startup or organizational costs
    • Dates when business began operations
    • Form 4562 filed with return
    Bad debts $ Lower Value

    Deductions for accounts receivable or loans that become uncollectible, available only if you use the accrual accounting method.

    Records to Keep:
    • Original invoices and account statements
    • Documentation of collection efforts
    • Written-off amount and date
    Business startup costs $$ Medium Value

    Up to $5,000 can be deducted immediately for costs to investigate or create a business, with the remainder amortized over 15 years.

    Records to Keep:
    • All pre-opening expenses with dates
    • Market research costs
    • Legal and consulting fees for formation
    • Date business began operations
    Deduction for removing barriers to individuals with disabilities and the elderly $ Lower Value

    Up to $15,000 per year for expenses to make your business more accessible, such as installing ramps or modifying restrooms.

    Records to Keep:
    • Contractor invoices for modifications
    • Before and after photos
    • Documentation of ADA compliance improvements
    De minimis safe harbor for tangible property $$ Medium Value

    Allows expensing of individual items costing up to $2,500 per invoice or item, instead of capitalizing them.

    Records to Keep:
    • Purchase invoices clearly showing per-item cost
    • Written accounting policy electing de minimis safe harbor
    • Applicable financial statement if available
    Film, television, and live theatrical production expenses $ Lower Value

    Special expensing allowances for qualified costs incurred in producing films, TV series, or live theatrical performances.

    Records to Keep:
    • Production budgets and expense reports
    • Contracts with cast and crew
    • Evidence of qualified production status
    Forestation and reforestation costs $ Lower Value

    Deduction of up to $10,000 per qualified timber property for costs related to planting or seeding trees.

    Records to Keep:
    • Property information and acreage
    • Planting contracts and costs
    • Seedling purchase receipts

Calculators: Tax Deductions for Self Employed

Get instant estimates for these commonly missed tax deductions and essential small business tax deductions:

Mileage Deduction

Eligibility Requirements:

Home Office (Simplified)

Eligibility Requirements:

Self-Employed Health Insurance

Eligibility Requirements:

Note: Deducted on Form 1040, not Schedule C

SEP-IRA Contribution

Eligibility Requirements:

Maximum contribution: 20% of net SE income (2025 limit: $69,000)

Business Meals (50%)

Eligibility Requirements:

These are estimates only. Actual small business tax deductions depend on your specific situation and eligibility. Consult with a tax professional for personalized advice.

Partnership Tax Deductions (Form 1065) - Multi-Member LLC Deductions

Partnerships and Multi-Member LLCs report expenses on Form 1065. Key small business tax deductions for partnerships include:

View IRS Form 1065 Instructions
Compensation & Labor
    Salaries and wages (other than to partners) $$$ High Value

    Compensation, including salaries, wages, bonuses, and other payments, provided to employees who are not partners. These must be reasonable, ordinary, and necessary for the business, and do not include payments to partners.

    Records to Keep:
    • Payroll records and timesheets
    • W-2 forms issued
    • Payroll tax deposits (Form 941)
    • Employment agreements
    Guaranteed payments to partners $$$ High Value

    Fixed payments made to partners for services rendered or for the use of capital, which are deductible by the partnership even if the business incurs a loss. These payments are reported as income to the receiving partner.

    Note: Deductible even if partnership has a loss

    Records to Keep:
    • Partnership agreement specifying guaranteed payments
    • Payment records and dates
    • Schedule K-1 showing guaranteed payments reported to partners
Property & Operations
    Repairs and maintenance $$ Medium Value

    Expenses for routine repairs and maintenance of business property, equipment, or facilities to keep them in normal operating condition, excluding any costs that substantially improve or extend the life of the asset.

    Records to Keep:
    • Repair invoices and receipts
    • Description of work performed
    • Documentation showing repair (not improvement)
    Rent $$$ High Value

    Payments for renting or leasing property, equipment, vehicles, or other assets used in the partnership's trade or business, including office space or machinery.

    Records to Keep:
    • Lease agreements
    • Monthly rent payment records
    • Landlord information
    Depreciation $$$ High Value

    The systematic deduction of the cost of tangible business assets over their useful lives using methods like MACRS; Form 4562 must be attached to report details.

    IRS Publication 946 - Depreciation
    Records to Keep:
    • Asset purchase records
    • Dates placed in service
    • Form 4562
    • Depreciation schedules
Financial Expenses
    Interest $$ Medium Value

    Interest paid on loans, credit lines, or other debts incurred for business purposes, subject to limitations like the business interest expense deduction rules under Section 163(j).

    Note: Subject to Section 163(j) limitations

    Records to Keep:
    • Loan agreements
    • Interest statements from lenders
    • Form 1098 if applicable
    • Business purpose documentation
    Bad debts $ Lower Value

    Deductions for business debts or accounts receivable that become partially or wholly worthless during the tax year, but only if the partnership uses the accrual method of accounting.

    Records to Keep:
    • Original invoices and account statements
    • Documentation of collection efforts
    • Written-off amount and date
    Taxes and licenses $$ Medium Value

    Various taxes paid by the partnership, such as state and local income taxes, real estate taxes, payroll taxes, and fees for business licenses, permits, or regulatory compliance.

    Records to Keep:
    • Tax payment receipts
    • Business license documentation
    • Property tax statements
    • Payroll tax deposits
Employee Benefits
    Retirement plans, etc. $$$ High Value

    Contributions to qualified retirement plans for employees, including pensions, profit-sharing plans, 401(k)s, or SIMPLE IRAs, within IRS limits.

    Records to Keep:
    • Plan documents
    • Contribution confirmations
    • Employee eligibility records
    • Form 5500 if required
    Employee benefit programs $$ Medium Value

    Costs for providing non-retirement benefits to employees, such as health insurance, group term life insurance, disability plans, or educational assistance.

    Records to Keep:
    • Benefit plan documents
    • Premium payments
    • Employee participation records
Special Deductions
    Depletion (Do not deduct oil and gas depletion) $ Lower Value

    Deduction for the depletion of natural resources such as minerals or timber; however, oil and gas depletion is not deducted at the partnership level and is instead passed through to the partners.

    Note: Oil & gas depletion passes through to partners

    Records to Keep:
    • Property acquisition costs
    • Units extracted during year
    • Depletion calculation worksheets
    Energy efficient commercial buildings deduction $$ Medium Value

    Deduction for costs associated with installing energy-efficient heating, cooling, lighting, or other systems in commercial buildings, calculated per square foot based on energy savings achieved.

    IRS Information on Energy Efficient Buildings
    Records to Keep:
    • Certification from qualified professional
    • Installation costs
    • Energy savings documentation

Other Common Partnership Small Business Tax Deductions

Amortization

$ Lower Value

Insurance premiums

$$ Medium Value

Legal and professional fees

$$ Medium Value

Supplies used and consumed

$$ Medium Value

Utilities

$$ Medium Value

Business startup and organizational costs

$$ Medium Value

Free Calculators for Tax Deductions for Self Employed Individuals and Businesses

Mileage Deduction

Eligibility Requirements:

These small business tax deductions are estimates only. May apply at partner level if self-employed. Consult with a tax professional.

S Corp Tax Deductions (Form 1120-S) - Complete Deduction List

S Corporations offer pass-through taxation while providing liability protection. Essential S Corp tax deductions include:

View IRS Form 1120-S Instructions
Compensation
    Compensation of officers $$$ High Value

    Reasonable salaries, bonuses, and other compensation paid to officers who are also shareholders for services provided. The IRS scrutinizes these to ensure they are not disguised dividends, and payroll taxes must be withheld.

    Note: Must be reasonable to avoid IRS scrutiny

    Records to Keep:
    • Employment agreements
    • Payroll records and W-2 forms
    • Documentation supporting reasonableness of compensation
    • Payroll tax deposits
    Salaries and wages (less employment credits) $$$ High Value

    Wages paid to employees (non-officers), reduced by any applicable employment tax credits like the Work Opportunity Tax Credit or Employee Retention Credit.

    Records to Keep:
    • Payroll records
    • W-2 forms
    • Employment credit documentation
Property & Operations
    Repairs and maintenance $$ Medium Value

    Costs to maintain and repair business assets in their current condition, without adding significant value or extending life.

    Records to Keep:
    • Repair invoices
    • Description of work
    • Documentation showing maintenance vs improvement
    Depreciation $$$ High Value

    Deduction for the allocation of asset costs over time based on useful life and depreciation methods.

    IRS Publication 946 - Depreciation
    Records to Keep:
    • Asset purchase records
    • Dates placed in service
    • Form 4562
    Rents $$$ High Value

    Lease payments for business property, equipment, or vehicles used in operations.

    Records to Keep:
    • Lease agreements
    • Payment records
    Advertising $$$ High Value

    Costs for promoting products or services through various media channels.

    Records to Keep:
    • Advertising invoices
    • Copies of promotional materials
    • Digital ad platform statements
Financial Items
    Interest $$ Medium Value

    Interest on business borrowings, subject to limitations.

    Records to Keep:
    • Loan agreements
    • Interest statements from lenders
    Taxes and licenses $$ Medium Value

    Business taxes and licensing fees.

    Records to Keep:
    • Tax payment receipts
    • License documentation
    Bad debts $ Lower Value

    Uncollectible business debts if using accrual method.

    Records to Keep:
    • Original invoices showing debt
    • Collection effort documentation
    • Evidence of worthlessness
Employee Benefits
    Pension and profit-sharing plans $$$ High Value

    Contributions to employee retirement plans.

    Records to Keep:
    • Plan documents
    • Contribution records
    Employee benefit programs $$ Medium Value

    Health insurance and other employee benefits.

Other Common S-Corp Deductions

Legal and professional services

$$ Medium Value

Insurance premiums

$$ Medium Value

Supplies

$$ Medium Value

Utilities

$$ Medium Value

Travel expenses

$$$ High Value

Business meals (50%)

$$ Medium Value

Amortization

$ Lower Value

Depletion

$ Lower Value

Energy efficient building deductions

$$ Medium Value

Free Calculators for Tax Deductions for Self Employed Individuals & Businesses

Mileage Reimbursement

For S-Corps, typically via accountable plan reimbursements

The home office deduction is not directly available as one of the standard S Corp tax deductions. However, shareholders may claim this small business tax deduction personally via an accountable plan.

C Corporation Tax Deductions (Form 1120) - Comprehensive Guide

C Corporations are taxed separately from owners and have unique small business tax deductions available:

View IRS Form 1120 Instructions
Compensation & Labor
    Compensation of officers $$$ High Value

    Reasonable compensation, including salaries and bonuses, paid to corporate officers for services rendered, subject to IRS reasonableness tests to prevent excessive deductions.

    Note: Subject to reasonableness tests

    Records to Keep:
    • Board resolutions approving compensation
    • Employment agreements
    • Payroll records and W-2 forms
    • Comparable salary data for reasonableness support
    Salaries and wages (less employment credits) $$$ High Value

    Wages paid to employees, net of any employment-related tax credits claimed by the corporation.

    Records to Keep:
    • Payroll records
    • W-2 forms issued
    • Employment tax returns
Charitable Contributions (C-Corp Only)
    Charitable contributions $$ Medium Value

    Donations to qualified charities, limited to 10% of the corporation's taxable income before the deduction.

    Note: Limited to 10% of taxable income

    IRS Charitable Contributions Guide
    Records to Keep:
    • Receipts from charities
    • Appraisals for non-cash donations over $5,000
    • Board approval for large donations
Operations & Assets
    Repairs and maintenance $ Medium Value

    Costs to maintain and repair business assets in their current condition, without adding significant value or extending life.

    Records to Keep:
    • Repair invoices
    • Work descriptions
    Depreciation $$ High Value

    Deduction for the allocation of asset costs over time based on useful life and depreciation methods.

    IRS Publication 946 - Depreciation
    Records to Keep:
    • Asset purchase records
    • Form 4562
    Depletion $ Lower Value

    Deduction for the exhaustion of natural resources owned by the corporation.

    Records to Keep:
    • Property acquisition records
    • Units extracted during year
    • Cost or percentage depletion calculations
    Rents $$ High Value

    Lease payments for business property, equipment, or vehicles used in operations.

    Records to Keep:
    • Lease agreements
    • Monthly payment records
    Advertising $$ High Value

    Costs for promoting products or services through various media channels.

    Records to Keep:
    • Advertising invoices
    • Copies of promotional materials
    • Digital ad platform statements
Financial & Tax Items
    Interest $ Medium Value

    Interest on business borrowings, limited by rules like Section 163(j) for large corporations.

    Records to Keep:
    • Loan agreements
    • Interest statements
    Taxes and licenses $ Medium Value

    Taxes imposed on the business, such as property taxes, and fees for necessary licenses and permits.

    Records to Keep:
    • Tax payment receipts
    • License documentation
    Bad debts $ Lower Value

    Deductions for uncollectible debts using the reserve method or specific write-off, depending on the corporation's accounting practices.

    Records to Keep:
    • Original invoices
    • Collection effort documentation
    • Evidence of worthlessness determination
Employee Benefits
    Pension, profit-sharing, etc., plans $$ High Value

    Contributions to employee retirement plans, including defined benefit and defined contribution plans.

    Records to Keep:
    • Plan documents
    • Contribution records
    Employee benefit programs $ Medium Value

    Expenses for employee benefits like health plans, insurance, and other perks.

    Records to Keep:
    • Benefit plan documents
    • Premium payment receipts

Other Common C-Corp Deductions

Amortization

$ Lower Value

Insurance premiums

$ Medium Value

Legal and professional fees

$ Medium Value

Supplies

$ Medium Value

Utilities

$ Medium Value

Travel expenses

$$ High Value

Business meals (50%)

$ Medium Value

Film/TV production expenses

$ Lower Value

Business startup costs

$ Medium Value

Energy efficient building improvements

$ Medium Value

Free Calculators for Tax Deductions for Self Employed Individuals and Businesses

Mileage Reimbursement

For C-Corps, typically via employee reimbursement programs

Home office deduction not applicable at corporate level.