Machinery Amortisation Calculator

Calculate annual and monthly machinery depreciation.

The Machinery Amortisation Calculator is a free tool designed for construction professionals and enthusiasts. Calculate annual and monthly machinery depreciation. Instantly get the required materials broken down by purchase units, with an option to add a wastage allowance so you never run short on site.

Inputs

Result

How to Use This Calculator

Gather cost data: materials, labour, machinery and overheads.
Enter the values in the corresponding fields.
Enter the profit margin and overhead percentage if applicable.
Review subtotals before accepting the final result.
Click 'Calculate' to get cost breakdown, unit price and totals.

Frequently Asked Questions

What overhead percentage is applied in construction?

Overheads typically range from 13–17 % of the direct cost. A profit margin of around 6 % is then added on top.

How is the selling price of a construction job calculated?

Selling price = Direct cost × (1 + Overhead%) × (1 + Profit%) × (1 + VAT%). The management calculators in this suite help you break down each item.

What is a worker's output rate?

Output rate is the amount of work completed by one worker per day (e.g. m² of plastering, ml of pipe installed). This is key for calculating labour costs.