Understanding Tax Deductions
For online sellers, tax deductions are one of the most powerful ways to reduce your tax liability legally. Every legitimate business expense you claim reduces your taxable income dollar-for-dollar. If you earn $100,000 in gross sales but deduct $30,000 in qualifying expenses, you only pay taxes on $70,000. This guide shows you every deduction available to Amazon and eCommerce sellers—many that sellers miss entirely.
Product & Inventory Deductions
Cost of Goods Sold (COGS)
This is your largest deduction. COGS includes all costs directly tied to producing or acquiring your products:
- Product Cost: Wholesale price you pay suppliers
- Freight & Shipping Inbound: Cost to get products to you
- Packaging Materials: Boxes, bubble wrap, tissue, labels
- Landed Cost: Duties and tariffs on imported goods
- Assembly & Labeling: Any labor directly tied to preparing products for sale
Not COGS (but still deductible as expenses): Outbound shipping to customers, advertising, warehouse overhead, general labor.
Product Samples & Testing
Money spent on product samples, testing, and prototyping is fully deductible. This includes:
- Samples for quality verification
- Product photography and shooting
- Testing equipment or services
- Failed batches or defective inventory (use estimated value)
Home Office Deduction
If you manage your business from home, this deduction can be worth $1,000-$5,000+ annually. Two methods exist:
Simplified Method
Calculation: Square footage of dedicated office space × $5/sq ft (maximum $1,500/year)
Example: 200 sq ft home office = 200 × $5 = $1,000 deduction
Requirements: Space must be used exclusively and regularly for business. A desk in your bedroom doesn't qualify. A dedicated office or storage room does.
Regular Method (More Complex, Often Better)
Calculate the percentage of your home used for business, then deduct that same percentage of:
- Mortgage interest or rent (not principal)
- Property taxes
- Insurance
- Utilities (electricity, water, gas)
- Repairs and maintenance
- Depreciation (for homeowners)
Calculation Example: If your home office is 2 rooms out of 8 total (25%), you deduct 25% of all eligible expenses.
Simplified Home Office Deduction Calculator
Common Operating Deductions
Internet & Phone
Percentage of internet/phone bill used for business. If 80% business use, deduct 80% of cost.
Office Supplies
Paper, pens, files, printer ink, staples, labels. Keep receipts for items over $100.
Software Subscriptions
Accounting software, inventory management, scheduling tools, design software used for business.
Equipment & Technology
Computers, scales, cameras, printers, servers. Depreciate or Section 179 deduct over time.
Advertising & Marketing
Google Ads, Facebook ads, sponsored listings, email marketing, influencer partnerships.
Professional Fees
CPA/bookkeeper, lawyer, tax preparation, business consulting, accountant fees.
Vehicle Expenses
Mileage for business (product sourcing, client meetings). 2025 rate: $0.70/mile
Warehouse/Storage
Rent for storage unit, fulfillment center fees, climate control for inventory.
Detailed Deduction Breakdown
| Deduction Category | Examples | Deductible? | Documentation Needed |
|---|---|---|---|
| Advertising & Marketing | Google Ads, Facebook ads, sponsorships, email lists | YES | Ad account statements, invoices |
| Bank Fees & Interest | Business account fees, loan interest, credit card fees | YES | Bank statements |
| Car & Truck Expenses | Mileage (0.70/mile), gas, repairs, insurance, registration | YES | Mileage log or actual expense receipts |
| Commissions | Platform commissions (Amazon, Etsy fees), affiliate payments | YES | Platform account statements |
| Depreciation | Equipment, computers, furniture (over $2,500) | YES | Receipt with cost and purchase date |
| Education & Training | Courses, certifications, books, conference attendance | YES | Receipts, certificates of completion |
| Insurance | Business liability, product liability, health insurance (self-employed portion) | YES | Insurance policy documents, premium statements |
| Office Supplies | Paper, pens, ink, file folders, labels, binders | YES | Receipts |
| Rent (Office/Storage) | Office space, warehouse, storage unit | YES | Lease agreement, canceled checks |
| Shipping (Outbound) | USPS, UPS, FedEx charges to customers | YES | Carrier receipts |
| Software | Accounting, CRM, scheduling, design software subscriptions | YES | Subscription confirmations, receipts |
| Utilities | Electricity, water, gas (business portion of home) | YES* | Utility bills, percentage calculation |
| Meals & Entertainment | Client meals, business lunches, conference food | 50% | Receipts with business purpose noted |
| Personal Expenses | Clothing, groceries, personal car insurance, mortgage principal | NO | N/A |
Deductions to Avoid (Red Flags)
The IRS scrutinizes these heavily. Only claim if genuinely business-related:
- First-Class Travel: Deduction limited to economy equivalent. First-class upgrade not deductible.
- Luxury Vehicles: Section 179 deduction capped at $12,200 (2025) per vehicle
- Home Office (90% of home): Too large is a red flag. Seems like personal residence with business exception
- Excessive Entertainment: Must be directly tied to business development or client relationships
- Mixing Personal & Business: Claiming internet when you also use it for streaming, for example
- Cash Transactions Without Documentation: IRS requires receipts for cash expenses over $75
Deduction Recordkeeping Best Practices
Proper documentation is critical. Here's what you need:
- Keep Everything: Receipts, invoices, credit card statements, cancelled checks for 7 years minimum
- Categorize Consistently: Use same categories annually (helps IRS not view changes as evasion)
- Document Business Purpose: Write "Amazon product photography" on receipt, not just "Photography"
- Track Basis for Property: Keep purchase receipts for depreciated items (computers, equipment)
- Mileage Log: Record actual business miles with dates, destinations, business purpose
- Digital Backup: Photograph receipts and store in cloud storage as backup