Tax Planning - Post 10 - Dental Equipment Tax Strategy
The Dental Practice Owner's Guide to Equipment Purchases: Timing, Depreciation, and Tax Savings
Meta Description: A $100,000 CBCT machine can save you $37,000 in Year 1—or $14,000. The difference is strategy. Here's how dental practice owners should approach equipment purchases.
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Cross-links: Section 179 vs Bonus Depreciation, Dental Practice Tax Planning, Dental Retirement Optimization
You're thinking about upgrading your equipment. Maybe a CBCT machine. Maybe CAD/CAM. Maybe new operatory chairs.
Before you sign the purchase order, stop.
The timing and structure of this purchase could swing your tax bill by $20,000 or more.
Here's what every dental practice owner needs to know before making a major equipment purchase.
The Basic Problem
When you buy equipment, you don't necessarily deduct the full cost immediately. Under standard rules, you spread the deduction over the equipment's "useful life"—typically 5-7 years for dental equipment.
Standard depreciation on a $100,000 CBCT:
Year 1: ~$14,290 (14.29% under MACRS)
Year 2: ~$24,490
Year 3: ~$17,490
Years 4-7: Declining amounts
At a 37% tax bracket, that Year 1 deduction saves you about $5,300 in taxes.
But you paid $100,000. Where's the rest of the benefit?
It comes later—spread over seven years.
The Better Approach: Accelerated Depreciation
Two tax provisions let you deduct equipment costs faster:
Section 179
Section 179 allows you to deduct the full purchase price in the year you buy the equipment.
2024 limits:
Maximum deduction: $1,220,000
Phase-out begins at $3,050,000 in total equipment purchases
Must have sufficient taxable income (can't create a loss)
Bonus Depreciation
Bonus depreciation lets you deduct a percentage of the cost immediately.
2024 rate: 80% (phasing down from 100%)
Key difference from Section 179: Bonus depreciation CAN create a loss. No income limitation.
Using Both Together
You can use both on the same equipment:
Apply Section 179 first (up to your taxable income)
Apply Bonus Depreciation to the remaining basis
Standard depreciation on anything left
Example:
$100,000 CBCT machine. Your taxable income is $350,000.
Section 179: $100,000 (full amount, you have the income)
Year 1 deduction: $100,000
Tax savings at 37%: $37,000
Compare that to $5,300 under standard depreciation.
Same machine. Same cost. $31,700 more cash in your pocket this year.
The Timing Factor
Here's something that shocks most practice owners: When you buy matters as much as what you buy.
The December Rule
If you buy equipment in December, you get the full year's depreciation—even if you only owned it for a month.
If you buy that same equipment in January, you wait 12 months for the tax benefit.
Example:
Buy a $100,000 intraoral scanner on December 15, 2024:
Claim $100,000 deduction on your 2024 return
Tax refund/savings in April 2025: $37,000
Buy the same scanner on January 15, 2025:
Claim $100,000 deduction on your 2025 return
Tax refund/savings in April 2026: $37,000
Same equipment. Same price. Same deduction. But one year apart.
That's $37,000 you could have for 12 extra months. At even 5% opportunity cost, that's $1,850 in lost value.
The Practical Calendar
If You're Buying In...
Recommendation
January - March
Ask yourself: Could I have done this in December?
April - July
Good time to plan for year-end purchase
August - September
Start vendor conversations, get quotes
October - November
Order now to ensure December delivery
December 1-15
Buy now, confirm December delivery/installation
December 16-31
VERIFY equipment will be placed in service by 12/31
"Placed in Service" Matters
It's not enough to order the equipment in December. It must be:
Delivered
Installed (if installation is required)
Ready for use
If your CBCT arrives December 28 but isn't installed until January 5, you may lose the deduction.
Plan ahead. Order in October/November to be safe.
Common Dental Equipment and Depreciation
Here's what typical dental equipment looks like under accelerated vs. standard depreciation:
High-Value Equipment
Equipment
Typical Cost
Year 1 (Accelerated)
Year 1 (Standard)
Difference
CBCT Machine
$80,000 - $150,000
Full amount
~$14,000-$21,000
$66,000-$129,000
CAD/CAM System
$100,000 - $200,000
Full amount
~$14,000-$28,000
$86,000-$172,000
Digital Scanner
$30,000 - $50,000
Full amount
~$4,000-$7,000
$26,000-$43,000
Panoramic X-ray
$20,000 - $60,000
Full amount
~$3,000-$8,500
$17,000-$51,500
Tax savings difference (at 37%):
Equipment
Accelerated Tax Savings
Standard Year 1
More Cash Now
$100K CBCT
$37,000
$5,300
$31,700
$150K CAD/CAM
$55,500
$7,950
$47,550
$40K Scanner
$14,800
$2,120
$12,680
Operatory Equipment
Chairs, lights, delivery systems—these add up quickly when you're expanding or renovating.
Equipment
Typical Cost
Depreciation Treatment
Operatory package
$25,000 - $50,000/room
179/Bonus eligible
Dental chairs
$8,000 - $25,000/each
179/Bonus eligible
Sterilization equipment
$5,000 - $20,000
179/Bonus eligible
3-operatory expansion at $40,000/room = $120,000
Accelerated deduction: $120,000
Tax savings (37%): $44,400
The Financing Question
"But I'm financing the equipment. Does that change anything?"
No.
How you pay for the equipment doesn't affect the deduction.
If you buy a $100,000 CBCT with $20,000 down and finance $80,000, you still deduct the full $100,000 in Year 1 (assuming you use 179/Bonus).
The loan is a separate transaction. You're deducting the cost of the asset, not the payments.
This is actually powerful:
Deduct $100,000 immediately: $37,000 tax savings
Finance the purchase: Pay ~$18,000/year over 5 years
Net Year 1 cash flow: $37,000 savings - $18,000 payment = $19,000 positive
You're getting the tax benefit upfront while spreading the cash outlay over time.
The Income Threshold Issue
Section 179 has one important limitation: You can't deduct more than your taxable income.
Example:
Your practice nets $200,000 this year. You buy $300,000 in equipment.
Section 179: Limited to $200,000 (your taxable income)
Remaining basis: $100,000
Bonus Depreciation (80% of $100,000): $80,000
Standard depreciation on remaining $20,000: ~$2,860
Total Year 1 deduction: $282,860
You still get most of it—just not all.
What If It's a Low-Income Year?
If you're having a down year—maybe you took extended leave, had a slow period, or are just starting out—big equipment purchases may not be ideal.
Alternative strategies:
Defer the purchase to a higher-income year
Use Bonus Depreciation to create a loss (carry back or forward)
Structure the timing across two tax years
What Your CPA Should (But Probably Doesn't) Do
Here's the conversation you should have BEFORE any purchase over $20,000:
You: "I'm thinking about buying [equipment] for around $[amount]. Before I do, can we discuss the tax implications?"
Good CPA response:
"What's your projected taxable income this year?"
"What month are you planning to purchase?"
"Let's talk about timing and depreciation strategy."
"Have you considered accelerating to this year or deferring to next?"
Mediocre CPA response:
"Sure, send me the invoice when you're done."
If you're getting the second response, your CPA is filing, not planning.
The Equipment Purchase Checklist
Before any purchase over $20,000:
Strategy Questions
☐ What's my projected taxable income this year vs. next year? ☐ Is this a high-income year (good for deductions) or low-income year? ☐ What month is it? Is December timing possible?
Timing Decisions
☐ Can this wait until October-December for better timing? ☐ If purchasing in Q4, will equipment be delivered AND installed by 12/31? ☐ Have I verified "placed in service" requirements with the vendor?
Tax Treatment
☐ Have I discussed Section 179 vs. Bonus vs. Standard with my CPA? ☐ Do I have enough taxable income to use Section 179? ☐ Am I documented in writing that I want accelerated depreciation?
Financing (If Applicable)
☐ Do I understand that financing doesn't affect the deduction? ☐ Have I modeled the cash flow (tax savings vs. loan payments)?
📥 DOWNLOAD: Equipment Purchase Tax Calculator
Before your next major equipment purchase, run the numbers:
Compare accelerated vs. standard depreciation
Calculate Year 1 tax savings difference
Model timing scenarios (this year vs. next)
Factor in financing cash flow
[Download the Equipment Tax Calculator (Excel) →]
The Bigger Picture
Equipment depreciation is important—but it's one piece of a larger puzzle.
A $30,000 swing on equipment depreciation is meaningful.
But:
Entity structure can save $15,000-$30,000/year
Retirement optimization can save $40,000-$100,000/year
Owner compensation structure matters too
Equipment timing is table stakes. The big wins come from comprehensive planning.
Our guarantee: $10,000+ in tax savings within 14 days—or we pay you.
[Book Your 14-Day Analysis →]
—Tom Woolley, Today CFO
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