T10

Boomo Hour – Machine cost per hour

Work out what one machine hour costs you and what to charge for it, in the costing order contractors know: ownership per year, per billable hour, running costs per hour, surcharge, price per hour. Every figure is your own, and each attachment gets its own add-on rate.

Machine

Make

Model

Year

Operating weight (t)

Engine power (kW)

Internal no.

Currency

Three letters, for example EUR or SEK. All amounts ex VAT.

What owning the machine costs per year, before it moves.

Purchase price

One-off costs at purchase

Transport, registration, training. Type 0 if there were none.

= Acquisition value—

Useful life (years)

Typical 4-6 years (WKO, Kalkulation von Erdbaugeräten, 2022).

Residual value after useful life

Typical 20-40 % of the acquisition value (WKO 2022).

Interest rate (own money or loan) (%)

Repair factor (×)

Repairs as a share of depreciation. Typical 0.50-0.70 (WKO 2022).

Equipment overhead (yard, admin) · optional (%)

On depreciation, interest and repairs. Leave blank if you do not add one.

Yearly fixed costs (currency/yr)

Insurance, vehicle tax, inspections. Type 0 if there are none.

Hours you can actually invoice. An hour figure you will not reach leaves costs uncovered.

Billable operating hours per year (h/yr)

WKO: about 1,300–1,600 h single shift in full employment; fewer where winter stops work.

What every operating hour costs on top of owning the machine.

Machine hired out without operator

Operator wage cost per paid hour (currency/h)

Including social charges.

Paid hours per billable machine hour (×)

WKO: 1.05-1.15.

Fuel use

Measured l/hl per kW and hour

Fuel use, measured (l/h)

Diesel price (currency/l)

Oil, grease, AdBlue (%)

As a share of fuel. WKO: 5-10 % oil and grease plus 2-3 % AdBlue.

Wear parts per hour (currency/h)

Teeth, cutting edges, tracks, tyres. Type 0 if none.

Other costs per hour (currency/h)

Added on the cost per hour to give your price per hour.

Business overheads (%)

Profit (%)

Financing until paid · optional (%)

Risk · optional (%)

Each attachment gets its own add-on rate per hour it is on the machine.

T10Made by Attachment Warehouse EuropeLive answerUpdates as you type

Cost per hour

Fill purchase price, years, residual value and hours to see the cost per hour.

Ownership per year

ADepreciation per year: needs: purchase price and one-off costs at purchase +2
BInterest per year: needs: purchase price and one-off costs at purchase +2
CRepairs per year: needs: purchase price and one-off costs at purchase +3
DEquipment overhead: needs: purchase price and one-off costs at purchase +4not applied
EFixed costs per year: needs: yearly fixed costs
FOwnership cost per year: needs: purchase price and one-off costs at purchase +5

Running per hour

GOwnership cost per billable hour: needs: purchase price and one-off costs at purchase +6
HOperator per hour: needs: operator wage cost per paid hour and paid hours per billable machine hour
IFuel per hour: needs: fuel use, measured and diesel price
JOil and AdBlue: needs: fuel use, measured and diesel price +1
KWear and other: needs: wear parts per hour and other costs per hour
LCost per hour: needs: purchase price and one-off costs at purchase +13

Price

MSurcharge: needs: purchase price and one-off costs at purchase +15
NPrice per hour: needs: purchase price and one-off costs at purchase +15
OWithout operator (hire-out rate): needs: purchase price and one-off costs at purchase +15

Save to the job to use this rate in other tools.

Fill purchase price, years, residual value and hours to see the cost per hour.

Boomo Hour – Machine hourly rate

Calculated October 25, 2026 · Currency — · ex VAT

Your figures

Purchase and ownership

Billable hours per year

Running costs per hour

Overheads and profit

Result

A	Depreciation per year	—
B	Interest per year	—
C	Repairs per year	—
D	Equipment overhead	—
E	Fixed costs per year	—
F	Ownership cost per year	—
G	Ownership cost per billable hour	—
H	Operator per hour	—
I	Fuel per hour	—
J	Oil and AdBlue	—
K	Wear and other	—
L	Cost per hour	—
M	Surcharge	—
N	Price per hour	—
O	Without operator (hire-out rate)	—

Method after WKO Kalkulation von Erdbaugeräten (2022) and the ÖNORM B 2061 cost structure.

Made by Attachment Warehouse Europe

Attachment Warehouse · Optional

Attachments for this job

Hammers, auger drives and grapples are the attachments most often priced as their own hourly add-on. Enter yours under Attachments.

Rock Breakers →Auger Drives →Grapples →Excavator Attachment Brackets →Check fit for your machine →

How it works

01
Enter purchase price, one-off costs, useful life, residual value, interest and repair factor. Depreciation, interest and repairs per year appear as you type.
02
Enter the hours you can bill in a year, then operator wage, fuel use and diesel price, oil and AdBlue, wear parts and other costs per hour.
03
Add overheads and profit to get the price per hour. Save it to the job, use it as a machine line in the job cost sheet or compare buying with hiring.

Formula

Depreciation = (acquisition − residual) ÷ years. Interest = (acquisition + residual) ÷ 2 × rate. Repairs = depreciation × repair factor.

Cost per hour = ownership per year ÷ billable hours + operator + fuel + oil and AdBlue + wear and other.

Price per hour = cost per hour × (1 + overheads) × (1 + financing) × (1 + risk) × (1 + profit).

Load labelled example

The public WKO brochure example: 100,000 purchase plus 5,000 one-off, 6 years, 30,000 residual, 5 % interest, repair factor 0.6, 1,000 fixed costs and 1,200 hours give ownership of 20.31 per hour. With operator, fuel and other costs the cost is 71.91 per hour, and after 15, 0.5, 6 and 5 % surcharges the price is 92.50 per hour.

Terms

How it works

Formula

Load labelled example

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