Locksmith Business Tax Guide: Entity Structure, S-Corp, and Mobile Service Deductions

Locksmith business tax structure:

1. NOT an SSTB. Locksmithing is a skilled trade involving physical work with tools and hardware. It doesn’t fall into any SSTB category (health care, law, accounting, consulting, financial services, performing arts, athletics, brokerage). The full 20% QBI deduction is available regardless of income.

2. Mobile service vehicle. The van or truck is the locksmith’s workshop. It carries the key machine, key blanks, lock inventory, and tools. Because the vehicle is used almost exclusively for business (driving to customer locations), the business-use percentage is typically 90-100%. A work van over 6,000 lbs GVWR qualifies for full Section 179 deduction.

3. Equipment and tools:

   • Key cutting machine ($1,000-$5,000): Section 179 or de minimis safe harbor
   • Electronic key programmer ($2,000-$10,000): Section 179
   • Lock pick sets, tension tools, bypass tools: de minimis safe harbor
   • Key blank inventory: supplies or COGS
   • Lock hardware inventory (deadbolts, knobs, padlocks): COGS
   • Electronic access control components: COGS
   • Safe manipulation and drilling equipment: Section 179

4. Parts inventory. Locksmiths carry significant inventory in the van (key blanks at $0.50-$5 each, lock sets at $30-$200 each, electronic components). This inventory is deducted as cost of goods sold when sold to customers, not when purchased. Proper inventory tracking (even simplified methods) is important.

5. Emergency/after-hours premium. Many locksmith businesses charge premium rates for emergency calls (nights, weekends, holidays). This income is ordinary business income, not different in character from regular service income. The higher margins on emergency calls make them a planning opportunity (more income to shelter with S-Corp structure and QBI deduction).

6. Licensing and bonding. State locksmith licenses, surety bonds, and background check fees are deductible business expenses.