Expense Tracking for Resellers: Maximize Your Tax Deductions

Every dollar you fail to track as a business expense is a dollar you overpay in taxes. For resellers on platforms like eBay, Depop, Poshmark, Vinted, and Etsy, expenses can easily add up to 40-60% of gross revenue — meaning proper tracking can save you thousands of dollars each year. This guide covers exactly what to track, how to track it, and the tools that make it manageable.

Expense Categories Every Reseller Should Track

Organising your expenses into clear categories makes tax filing easier and ensures you do not miss deductions. Here are the major categories for resellers.

Cost of Goods Sold (COGS)

COGS is almost always your largest expense category. It includes everything you spent to acquire the items you sold during the tax year:

• Purchase price of inventory items
• Shipping costs to receive inventory (inbound freight)
• Auction fees at estate sales or liquidation auctions
• Import duties or customs fees on sourced goods
• Cleaning, repair, or refurbishment costs to make items sellable

COGS is reported separately from other expenses on Schedule C (Line 4) and is subtracted from gross receipts to calculate gross profit. This distinction matters because COGS reduces your income before any other deductions are applied.

Important: Only the cost of items you actually sold counts as COGS. Unsold inventory at the end of the year is carried forward as an asset, not deducted as an expense. This is why accurate inventory tracking is essential.

Shipping and Packaging

All costs related to getting sold items to your buyers are deductible:

• Postage and shipping labels (USPS, Royal Mail, Hermes, UPS, FedEx)
• Poly mailers, bubble mailers, and shipping boxes
• Bubble wrap, packing peanuts, tissue paper
• Packing tape, labels, and stickers
• Shipping scale
• Shipping insurance premiums
• Printer ink and paper for labels

If you buy shipping supplies in bulk, the full purchase is deductible in the year you bought them, even if you use them across multiple years. For resellers moving 20-50 items per week on eBay or Poshmark, shipping supplies can easily cost $1,000-$2,000 per year.

Platform Fees

Every reselling platform charges fees, and they are all deductible:

• eBay: Final value fee (13.25% typical), promoted listing fees, store subscription ($4.95-$299.95/month)
• Poshmark: 20% commission on sales over $15, flat $2.95 on sales under $15
• Depop: 10% selling fee (note: Depop removed seller fees in the US in 2024 for some transactions — check current policy)
• Etsy: $0.20 listing fee, 6.5% transaction fee, 3% + $0.25 payment processing
• Vinted: Buyer pays fees in most markets (no seller fees), but check your specific market
• Mercari: 10% selling fee

Download your annual fee statements from each platform for accurate numbers rather than estimating.

Supplies and Equipment

• Photography equipment (ring light, lightbox, tripod, camera)
• Clothing steamer or iron
• Mannequin or dress form for photography
• Garment rack and hangers
• Storage bins, shelving units, organising supplies
• Measuring tape, fabric shaver, lint roller
• Authentication tools (UV light, jeweller's loupe)

Equipment costing less than $2,500 can be deducted in full in the year of purchase under the IRS de minimis safe harbour rule. More expensive equipment can be depreciated or fully deducted using Section 179.

Vehicle and Mileage

Driving to source inventory is a deductible business expense. You have two tracking options:

Standard Mileage Rate (simpler): Multiply your business miles by the IRS rate ($0.70/mile in 2026). If you drive 3,000 miles per year sourcing from thrift stores, estate sales, and auctions, that is a $2,100 deduction.

Actual Expense Method (potentially larger): Track all vehicle costs (fuel, insurance, maintenance, depreciation) and deduct the business-use percentage. If your car costs $6,000/year to operate and 40% of miles are business-related, you deduct $2,400.

You must choose one method and generally stick with it for the life of the vehicle. The standard mileage rate is simpler and often better for resellers who drive personal vehicles.

Home Office

If you use a dedicated space in your home exclusively for your reselling business (listing, photographing, storing inventory, shipping), you can claim a home office deduction.

• Simplified method: $5 per square foot, up to 300 sq ft = maximum $1,500 deduction
• Regular method: Calculate the percentage of your home used for business and deduct that percentage of rent/mortgage interest, utilities, insurance, and maintenance
• UK flat rate: £6 per week (£312/year) without needing receipts, or actual proportional costs with documentation

Phone and Internet

You can deduct the business-use percentage of your phone and internet bills. If you estimate 40% of your phone use is for photographing items, managing listings on eBay and Depop, communicating with buyers, and researching prices, you can deduct 40% of your monthly bill. At $100/month, that is $480/year.

Software and Subscriptions

• Listing tools and cross-posting software (List Perfectly, Crosslist, Vendoo)
• Accounting software (QuickBooks, Wave, Xero)
• Cloud storage for receipt and photo backup
• Price research tools (Terapeak, Worthpoint)
• Graphic design tools for social media marketing

Tools for Tracking Expenses

Choosing the right tracking tool depends on your volume and comfort level. Here are the best options for resellers.

Spreadsheets (Free)

A well-structured Google Sheet or Excel workbook is perfectly adequate for most resellers. It costs nothing and gives you complete control. Here is an example structure for an expense tracking spreadsheet:

Create separate tabs for each month and a summary tab that totals expenses by category. At tax time, these totals map directly to Schedule C line items.

QuickBooks Self-Employed ($15/month)

QuickBooks Self-Employed is designed for freelancers and sole proprietors. It automatically imports bank and credit card transactions, lets you categorise expenses with a swipe, tracks mileage via GPS, and generates Schedule C-ready reports. It integrates with TurboTax for seamless tax filing.

Wave (Free)

Wave is a free accounting platform that works well for small resellers. It offers bank connection, receipt scanning, invoicing, and basic reporting. The trade-off is fewer features than QuickBooks, but the price is right for resellers just getting started. Wave also offers payroll services if you elect S-Corp status.

Dedicated Reseller Apps

Several apps are built specifically for resellers:

• Seller Ledger: Designed for eBay and Poshmark sellers, automatically imports sales data and calculates COGS
• My Reseller Genie: Tracks inventory, expenses, and profit per item across multiple platforms
• AceBudget: Simple expense tracking with reseller-friendly categories

Use ListingGenie alongside these tools to create optimised listings on eBay, Depop, and other platforms while keeping your financial data organised separately.

Receipt Management Best Practices

The IRS and HMRC both accept digital copies of receipts. Here is a practical system for managing yours:

• Photograph every receipt immediately after purchase. Thermal receipts fade within months, making them unreadable. Use your phone camera or a dedicated app like Adobe Scan.
• Name files consistently: Use a format like 2026-01-05_goodwill_48.50.jpg so files are searchable.
• Store in the cloud: Use Google Drive, Dropbox, or iCloud with a folder structure organised by year and month. This protects against device loss or failure.
• Back up monthly: Download a copy of your cloud folder to an external drive or second cloud service.
• Keep credit card and bank statements: These serve as backup documentation if individual receipts are lost.

Mileage Logging

Mileage is one of the most commonly missed deductions for resellers who source in person. The IRS requires contemporaneous records — you need to log mileage at or near the time of each trip, not reconstruct it at year-end.

Your mileage log should include:

• Date of trip
• Starting location and destination
• Business purpose (e.g., "sourcing inventory at estate sale")
• Miles driven (round trip)

Apps like MileIQ ($5.99/month) or Stride (free) automatically track your drives using GPS and let you categorise them as business or personal with a swipe. At 3,000-5,000 business miles per year, this deduction alone is worth $2,100-$3,500.

Inventory Tracking Methods

Accurately tracking inventory is critical for calculating COGS. Here are the two methods most relevant to resellers:

FIFO (First In, First Out)

FIFO assumes the first items you purchased are the first ones sold. This is the most common method and is straightforward for most resellers. If you buy a lot of 20 shirts at $5 each in January and another lot at $7 each in March, the first shirts you sell are valued at $5 cost.

Specific Identification

This method tracks the actual cost of each individual item. It is more accurate but requires more detailed record-keeping. It works best for resellers who deal in higher-value items where each piece has a distinct cost (vintage watches, designer handbags, electronics). For example, if you buy a specific Coach handbag for $45 at a thrift store and sell it for $180 on Poshmark, you use the actual $45 as your COGS for that item.

Most resellers selling 10+ items per week on platforms like eBay and Depop find that a hybrid approach works best: specific identification for items over $50 in cost, and FIFO for lower-cost bulk purchases.

End-of-Year Expense Review Checklist

Before filing your taxes, run through this checklist to make sure you have captured everything:

• Download annual sales reports from every platform (eBay, Poshmark, Depop, Etsy, Vinted)
• Download annual fee statements from every platform
• Total your COGS using your inventory tracking system
• Sum mileage logs and calculate the deduction
• Calculate home office deduction (simplified or actual)
• Total shipping supply purchases
• Sum software and subscription costs
• Calculate phone and internet business-use percentage
• Review bank and credit card statements for any missed business expenses
• Verify your beginning and ending inventory values

Frequently Asked Questions

• Can I deduct the cost of items I bought but have not sold yet?

  No. Unsold inventory is an asset, not an expense. The cost of an item only becomes deductible as COGS in the year you sell it. This is why tracking inventory values at year-end is important — you need beginning and ending inventory figures for Schedule C.

• What if I lose a receipt?

  A lost receipt does not mean a lost deduction. The IRS accepts other documentation such as bank or credit card statements, cancelled cheques, or even a written log made at the time of purchase. However, receipts are the strongest form of documentation, so photograph them immediately.

• Should I use a separate credit card for business expenses?

  Absolutely. A dedicated business credit card simplifies tracking enormously. Every transaction on that card is a business expense by default. It also makes it easier to demonstrate business intent if audited and helps build business credit.

• Can I deduct clothing I buy to photograph and model for listings?

  If you buy clothing specifically to resell, the cost is COGS. If you buy clothing to wear as a model in listing photos, it is generally not deductible because the IRS considers clothing you can wear outside of work a personal expense. The exception is clothing unsuitable for everyday wear (costumes, uniforms).

• How do I track expenses from cash purchases at garage sales?

  Create a written log immediately after the purchase. Record the date, location, items purchased, and amount paid. Take a photo of the items with the cash amount visible on a note if possible. This contemporaneous record is acceptable documentation even without a formal receipt.

• Is there a minimum amount for deductible expenses?

  No. Every legitimate business expense is deductible regardless of amount. A $0.50 price tag removal tool, a $2 roll of tape, and a $500 camera are all equally deductible. The key is that they must be ordinary and necessary expenses for your reselling business. Small amounts add up — tracking every dollar matters.