📋Business Expenses

Is a Second Monitor Tax Deductible?

Q: How do I categorize a Second Monitor Tax Deductible in QuickBooks?

In QuickBooks Online, categorize this under "> **Behind on your bookkeeping?** Ketchup catches up your QuickBooks in 3–7 business days — starting". Report on Line 22.

✅ Yes, Tax Deductible

Yes — A second monitor for your business workstation is fully deductible, and studies show it boosts productivity by up to 30%.

IRS Reference: IRS Publication 946

QBO Category: > **Behind on your bookkeeping?** Ketchup catches up your QuickBooks in 3–7 business days — starting · Line 22

Quick Answer: ✅ Yes — A second monitor for your business workstation is fully deductible, and studies show it boosts productivity by up to 30%.

The Short Answer

Adding a second monitor to your business setup is a deductible expense just like your first one. Dual-monitor setups are standard in most knowledge-work industries, and the IRS considers them ordinary and necessary business equipment. Most monitors cost under $2,500 and can be expensed immediately.

IRS Rules for Deducting a Second Monitor

The rules for a second monitor are identical to any computer peripheral under IRS Publication 946 — it's 5-year MACRS property that's typically expensed immediately through the de minimis safe harbor or Section 179.

The IRS doesn't limit you to one monitor. If your work benefits from multiple screens — coding, design, financial analysis, video editing, data entry — each monitor is a separate deductible expense. The key requirement is business use.

For home offices, each monitor must be in a qualifying workspace under the exclusive and regular use test (Publication 587). If your dual-monitor setup is in a dedicated home office, you're covered.

How Much Can You Deduct?

Setup	Typical Cost	Deductible
-------	-------------	------------
Second 24" monitor	$150–$300	100% business use
Second 27" 4K monitor	$250–$500	100% business use
Ultrawide (replaces dual setup)	$300–$800	100% business use
Monitor arm/mount for second display	$30–$150	100%

Don't forget: the monitor arm, cables (HDMI, DisplayPort, USB-C), and any adapters or docking stations are separately deductible.

How to Categorize in QuickBooks

QBO Category: Computer & Internet Expenses or Computer Equipment
Schedule C Line: Line 22 (Supplies) if expensing; Line 13 (Depreciation) if capitalizing
Tip: Track each monitor as a separate line item so you know when each was purchased and can plan replacements.

Common Mistakes to Avoid

Thinking one monitor is the limit. The IRS doesn't cap the number of monitors you can deduct. Three monitors for a day trader? Deductible. Four for a video editor? Also fine, as long as they're used for business.
Not deducting the mounting hardware. Monitor arms, VESA mounts, and desk clamps are separate deductible expenses. They're not part of the desk or the monitor — they're their own line item.
Forgetting to update your asset list. If you're tracking depreciation on monitors (usually unnecessary for items under $2,500), make sure your second monitor is logged as a separate asset.

Record-Keeping Requirements

Keep the purchase receipt showing date, vendor, model, and cost. If buying online, save the order confirmation. For home offices, maintain your home office documentation. Retain records for at least 3 years from filing.