Last updated: March 2026
The General Depreciation Curve
Heavy equipment doesn't depreciate on a straight line. The steepest drop happens in year one — the transition from "new" to "used." After that, depreciation follows a declining-rate curve: fast in the first five years, slower as the machine ages toward its floor value.
Hours matter as much as — or more than — age. A 2015 machine with 2,500 hours will typically sell for more than a 2019 machine with 9,000 hours. The hour meter is the primary proxy for mechanical wear, and buyers price accordingly.
The steepest drop. As soon as a machine is sold new and put to work, it transitions from 'new' to 'used' — a categorically different buyer pool. The year-one hit is structural, not condition-based.
The primary depreciation phase. Hours accumulate, wear appears, and machines move from the high end of the used range toward the middle. Brand and maintenance quality begin to separate machines in this window.
Depreciation slows but continues. Machines in this window are in the 'workhorse' category — still productive, but the market accounts for impending major service needs (undercarriage, engine work). Tier 4 emission requirements also affect older machines here.
Value stabilizes near its floor. Very old machines with extremely low hours can hold value well; high-hour machines in this bracket may be valued primarily on scrap and parts. Tier 3 and older machines face job site restrictions on many projects.
Cumulative Value Retention (Illustrative)
Based on average across equipment types. Individual machines vary based on brand, hours, and maintenance.
Depreciation Rates by Equipment Type
Not all equipment depreciates at the same rate. Here are the realistic annual depreciation ranges by type, informed by current resale market data.
Excavators
93 models trackedExcavators hold value well because demand is consistent — they're the most widely used machine on commercial construction sites. CAT and Komatsu excavators retain 15–25% more value than off-brand equivalents at the same hours and year. The undercarriage is the primary depreciation driver after year five: a full undercarriage replacement on a mid-size machine runs $15,000–$35,000 and buyers factor that into offers.
Mini excavators (under 6 tons) depreciate slightly faster — 10–12% annually — because the buyer pool is wider and competition from new machines is intense.
Skid Steers
44 models trackedSkid steers depreciate faster than most tracked machines because they accumulate hours quickly (often used 8–12 hours/day on active sites) and take significant structural wear from repetitive loading cycles. Tire condition, lift arm wear, and coupler plate condition are the top value factors at resale.
Bobcat machines retain a meaningful brand premium — a Bobcat S770 will consistently sell for more than a comparable Case or New Holland in the same condition. Track skid steers (CTLs) hold value slightly better than wheeled models due to their broader application range.
Bulldozers
49 models trackedBulldozers have among the best value retention of any equipment type. They're used in specialized applications — earthmoving, land clearing, mine site work — where there's no real substitute. CAT D-series dozers (D6, D7, D8) are particularly strong holders: brand loyalty is intense, dealer support is excellent, and the buyer pool is deep.
Undercarriage is the primary wear item, same as excavators. A bulldozer with documented low hours and a recent undercarriage inspection can command a significant premium over a comparable machine with unknown service history.
Cranes
$100K–$1900K rangeCranes vary wildly by type. All-terrain cranes hold value exceptionally well — a late-model Liebherr or Grove AT crane with low engine hours can retain 60–70% of original value at 5 years. Tower cranes, crawler cranes, and rough-terrain cranes each have their own depreciation curves driven by rental market demand and available capacity.
Inspection and certification history is unusually important for crane values. A machine with current load test certifications and documented inspections sells significantly faster and at a meaningful premium over equivalent machines without that paperwork.
Factors That Accelerate Depreciation
These factors cause machines to lose value faster than the typical curve. Some are within your control — others aren't.
Poor or Undocumented Maintenance
Machines without service records sell at a discount because buyers have no confidence in internal condition. Even if the machine ran perfectly, the absence of documentation adds uncertainty that buyers price in — typically 10–20% below a documented equivalent.
High Accumulated Hours
Above 8,000–10,000 hours (varies by machine type), buyers begin pricing in imminent major repairs: engine overhaul, undercarriage replacement, hydraulic pump replacement. The market doesn't just discount wear — it discounts anticipated future spend.
Outdated Emissions Tier
Tier 3 and older machines (generally pre-2012) are restricted from many job sites, ports, and government contracts. This limits the buyer pool and creates a structural price ceiling — even a low-hour Tier 3 machine faces this headwind in emissions-regulated markets.
Off-Brand or Discontinued Models
Machines from brands with limited dealer networks or discontinued models face steeper depreciation because parts availability is uncertain and the resale buyer pool is shallow. Buyers demand a larger discount to offset the risk.
Deferred Mechanical Repairs
Known issues that haven't been addressed — a bad hydraulic cylinder, an oil leak, an intermittent electrical fault — are visible to any competent buyer during inspection and priced accordingly. The discount is almost always larger than the repair cost.
Cosmetic Neglect and Cab Condition
Buyers make emotional judgments on first visual impression. A machine with faded decals, a damaged cab interior, and rust on structural components signals 'neglected' — which applies as much to the mechanical maintenance as to the appearance.
Factors That Slow Depreciation
These factors put your machine at the top of the comparable range — where buyers pay more and machines sell faster.
Low Operating Hours
The single most powerful value protector. Under 2,000 hours commands a genuine premium in most equipment categories. A machine approaching 5,000 hours with dealer-documented service is still well-positioned.
Documented Service History
Dealer service records, oil analysis reports, and maintenance logs consistently add 10–15% to offers. Request a service history printout from your dealer before selling — it often takes one phone call and takes minutes.
Premium Brand
CAT, John Deere, Komatsu, Liebherr, and Volvo command brand premiums because dealer networks are deep, parts are available, and buyers have confidence in the resale liquidity. Premium brand machines sell faster and at higher prices than comparable machines from second-tier manufacturers.
Current Emissions Tier (Tier 4 Final)
Tier 4 Final machines (generally 2014+) can access the full buyer pool — no job site restrictions, no emissions compliance risk. In California and other regulated states, the Tier 4 premium is particularly meaningful.
Complete Attachments Package
Coupler systems, multiple buckets, thumbs, and specialty attachments add real value — particularly when the attachments fit the specific machine. An excavator sold with a pin-on thumb, a digging bucket, and a cleanup bucket is a complete package that buyers pay more for.
Recent Undercarriage Work
A fresh undercarriage on a dozer or excavator removes the biggest looming cost from buyer calculations. If you're approaching a major undercarriage replacement anyway, consider whether selling pre-replacement yields better net proceeds.
Tax Depreciation vs. Market Depreciation
Tax depreciation and market depreciation are separate concepts that are often confused — with real financial consequences for sellers.
Tax Depreciation
- IRS schedule — Section 179 and MACRS
- Heavy equipment: typically 5-year MACRS schedule
- Section 179 may allow 100% first-year deduction on qualifying purchases
- Recapture rules apply when you sell
Market Depreciation
- What buyers actually pay — driven by hours, condition, brand, and demand
- Slower than tax depreciation in most years 2–6
- Accelerates after high-hour thresholds (8,000–10,000 hrs)
- Not predictable from a schedule — requires market comparison
Important: When you sell equipment that has been fully depreciated for tax purposes but still has market value, you may face depreciation recapture — ordinary income tax on the difference. This can be a significant tax event on a $100,000+ machine. This is general information only — consult your CPA or tax advisor before making a sale decision based on tax considerations.
When to Sell — The Sweet Spot Before the Curve Steepens
Timing your sale relative to the depreciation curve is the highest-leverage decision most equipment owners don't make intentionally. Here's how to think about it.
Before 5,000–6,000 Hours
Most buyers use 5,000–6,000 hours as the inflection point where they start heavily discounting for expected repairs. Selling before this threshold — even if the machine is running perfectly — avoids absorbing that market discount.
Before an Undercarriage Replacement
If you can see undercarriage replacement on the horizon (within the next 500–1,000 hours), sell first. Buyers will price in the replacement anyway. You don't improve your net by doing the work and asking more — the math rarely closes that gap.
Before the Model Year Becomes Tier 3 / Pre-Tier 4
If your machine is approaching the age where Tier 4 compliance becomes a buyer concern (generally pre-2012 machines), selling sooner gives you access to the full buyer pool. Wait too long and the Tier 3 restriction limits who can bid.
When Demand Is Seasonal High
Equipment demand peaks February–May as contractors gear up for the build season. Selling in Q4 means competing against slower buyer activity. If you have flexibility, targeting a spring listing or offer can yield 5–10% better proceeds.
After You've Recovered Investment
If you financed new equipment and the outstanding loan balance exceeds what the machine will bring at sale, you're underwater. Wait until you have equity before selling if possible — selling underwater means writing a check at closing.
Frequently Asked Questions
How fast does an excavator depreciate?
Excavators depreciate roughly 15–20% in year one, then 8–10% per year through years 2–5. Brand matters significantly: a CAT or Komatsu excavator will hold value 15–25% better than an off-brand equivalent at the same hours and year. Low-hour machines (under 3,000 hrs) maintain much of their value through year five if properly serviced.
What heavy equipment holds its value best?
Bulldozers and motor graders hold value better than most categories — strong brand loyalty (CAT D-series dozers in particular), lower hours accumulated per year, and a buyer base willing to pay for known-good machines. Excavators hold value well because demand is deep. Skid steers depreciate faster due to high hourly wear rates. Specialty equipment like cranes and scrapers varies widely by spec and condition.
When is the best time to sell heavy equipment?
The sweet spot is typically years 3–6 and before the machine hits 5,000–6,000 hours. In this window, most of the steep early depreciation has already been absorbed, but the machine hasn't reached the threshold where buyers start pricing in imminent major repairs. Selling before undercarriage replacement, before an engine overhaul is due, and before Tier 4 transition pressures your model year will consistently yield better net proceeds.
How do operating hours affect depreciation more than age?
Heavy equipment is rated by hours because that's what drives mechanical wear — not calendar time. A 2016 machine with 2,500 hours will often sell for more than a 2018 machine with 8,000 hours. The hour meter is the most important number on the machine. Under 2,000 hours is considered low for most equipment classes and commands a premium price.
What is the difference between tax depreciation and market depreciation for equipment?
Tax depreciation (Section 179, MACRS) is an accounting schedule set by the IRS that determines how quickly you can write off equipment value for tax purposes. Market depreciation is what a buyer will actually pay for your machine. The two rarely align. Tax schedules often allow faster write-offs than the machine actually loses in market value — particularly under Section 179 bonus depreciation, which can allow 100% first-year deduction. This is general information, not tax advice — consult your CPA for specifics.