Start / Machinery and application / Machinery cost

Depreciation of machines and equipment

Enter the machine's value, residual, useful life, and use to see each year's depreciation by the chosen method, the book value, the depreciation cost per hour, and the comparison with the Federal Revenue tax rate for shifts.

Pre-sizing and estimating tool: the results do not replace a design, calculation, or report signed by a qualified professional, nor verification against the applicable standards.

Preliminary estimateRevision 12/11/2026
Asset to depreciate

Without a list below, each year uses the productive hours from the “Machine use” block. For irregular use, enter the hours (or units) for each year.

Tax depreciation (for comparison)

The tax rate is multiplied by 1.5 with more than 8 h of operation per day and by 2.0 with more than 16 h (movable assets, art. 323 of RIR/2018). Shifts and hours come from the "Machine use" block.

Machine use

Data stays only in this browser and is not sent. Uncheck to erase it.

—First-year depreciation
—

Book value year by year

How much the asset is still worth on the books at the end of each year, by the chosen method (bold line), by the other methods and by the tax rule.

Tap the chart to see the values.

Annual depreciation: book × tax

Bars: depreciation of each year by the chosen method and tax rule. Line: depreciation cost per productive hour.

Tap the chart to see the values.

Year-by-year depreciation table

Annual depreciation, accumulated depreciation and book value at the end of each year; cost per productive hour and, alongside it, the tax depreciation and the tax balance.

What if the data changes?

Drag the controls to simulate data different from what you entered (from 30% less to 30% more) and watch the result change instantly.

Tap the chart to see the values.

First-year depreciation based on value, residual, and useful life

First-year depreciation for changes in purchase value, residual value, and useful life, using the chosen method.

Step by step with your numbers

The calculation done in steps, with the values you entered.

    Next step

    Take this page's results to another calculator, with the fields already filled in.

    The calculation memo gathers this page's inputs, results, equations, assumptions, and references, with fields for project, responsible person, and review. The full report also includes the charts and interpretations, in color. In the print window, choose Save as PDF.

    How to use

    Enter the purchase price, the residual value as a % of the price, the useful life in years, and the start year. Choose the accounting method: straight-line, sum-of-years'-digits, declining balance, per hours of use, or same as tax. Then enter the use (shifts per day, hours per shift, days per year, and availability) to see the cost per hour. The asset type sets the tax rate.

    Hypothetical example (illustrative values)

    Hypothetical values, to understand the calculation. They are not technical or market references.

    R$ 500,000 machine, residual of 10% (R$ 50,000), useful life of 10 years, straight-line method. Works 2 shifts of 8 h, 250 days per year, with 85% availability: that is 3,400 productive hours per year.

    Accounting depreciation: (R$ 500,000 − R$ 50,000) ÷ 10 = R$ 45,000 per year, or R$ 13.24 per productive hour. At the end of year 5, the book value is R$ 275,000.

    At a 10% tax rate with a 1.5 coefficient (16 hours of use per day), first-year tax depreciation would be R$ 75,000, different from the accounting figure. This difference matters for tax planning.

    Precautions

    • Depreciation is an accounting cost, not a cash outlay. For the total cost of the machine, see the machine hourly cost.
    • The tax rate follows RFB Normative Instruction No. 1,700/2017 (Annex III). Confirm with your accountant before using the value in a tax return.
    • To compare with renting and financing, see buy, finance, rent or lease.

    Method, assumptions, and references

    Equations used

    Straight-line: Dₖ = (V − R) ÷ N; sum-of-years'-digits: Dₖ = (V − R)·(N − k + 1) ÷ [N·(N + 1)/2]
    Declining balance: Dₖ = VCₖ₋₁ · f/N, switching to max(VCₖ₋₁·f/N; (VCₖ₋₁ − R)/(N − k + 1)); last year closes at R
    By use: Dₖ = (V − R) · hoursₖ ÷ total life in hours
    Tax (Brazil): Dₖ = V · Annex III rate · coefficient (1.0 up to 8 h/day; 1.5 up to 16 h; 2.0 above), up to the acquisition cost
    Cost per hour = Dₖ ÷ (shifts × hours per shift × days × availability)

    Assumptions and limits

    • Whole years, without prorating the start month; a single useful life and residual value, with no revaluation or reduction to recoverable value. Accounting depreciation (costs and balance sheet) uses the economic life; tax depreciation follows the Revenue rate on the acquisition cost.
    • Shift-based accelerated depreciation, applied only to movable assets, based on daily operating hours; does not include incentive accelerated depreciation or INT appraisal fees.

    Standards and technical documents

    • CPC 27 / IAS 16 — Property, Plant and Equipment: useful life, residual value and depreciation method
    • IRS Publication 946, How to Depreciate Property — Table A-1 (MACRS half-year convention)
    • Martins, E. Cost Accounting. Atlas
    • Horngren, C. T.; Datar, S. M.; Rajan, M. V. Cost Accounting: A Managerial Emphasis. Pearson
    • Iudícibus, S. et al. Corporate Accounting Manual (FIPECAFI). Atlas

    Legislation and regulations in Brazil

    • RFB Normative Instruction No. 1,700/2017, Annex III: useful life periods and annual depreciation rates by NCM
    • Decree No. 9,580/2018 (Income Tax Regulation), art. 323: accelerated depreciation of movable assets by 8-hour shifts (coefficients 1.0; 1.5 and 2.0)
    • Law No. 6,404/1976, art. 183, § 2, and CPC 27: accounting depreciation

    Frequently asked questions

    What is machine depreciation?

    It is the loss of equipment value from use, time and obsolescence, charged as a cost over the useful life. A R$ 500,000 machine worth R$ 50,000 after 10 years generates R$ 450,000 of depreciation cost over that period. This cost goes into the machine hourly cost, into product prices and, under the tax rules, into income tax.

    How to read the example result?

    Using the straight-line method, the example machine depreciates R$ 45,000 per year over 10 years. With 2 shifts of 8 hours, 250 days and 85% availability, that is 3,400 productive hours per year, so depreciation is R$ 13.24 per machine hour. At the end of year 5, the book value is R$ 275,000.

    Which method should I use: straight-line, sum-of-the-years'-digits or declining balance?

    For cost and budgeting, the straight-line method is the most used and easiest to explain. Sum-of-years'-digits and declining balance put more cost at the start (in the example, R$ 81,818 and R$ 100,000 in year 1) and come closer to the real drop in used-equipment prices. By hours of use is best when the machine works irregularly, for example during harvest. CPC 27 requires the method that reflects the pattern in which the asset's economic benefits are consumed.

    What are the Federal Revenue tax rates?

    Annex III of RFB Normative Instruction No. 1,700/2017 sets out the useful life and rate by type of asset, by NCM: industrial machinery and equipment in general 10% per year (10 years), computers 20% (5 years), passenger cars 20% (5 years), trucks, tractors, and buses 25% (4 years), installations and furniture 10%, and buildings 4% (25 years). Some items in chapter 84 have their own rate: check the NCM of your asset. The rate applies to the acquisition cost, with no residual value.

    What is shift-based accelerated depreciation?

    Art. 323 of the Income Tax Regulation (Decree No. 9,580/2018) allows the tax rate on movable assets to be multiplied by 1.0 for one 8-hour shift, 1.5 for two shifts, and 2.0 for three shifts. In the example, 16 hours a day raises the machine's rate from 10% to 15%: R$ 75,000 per year for 6 years and R$ 50,000 in the 7th. The rule does not apply to buildings.

    Does tax depreciation reduce the tax of any company?

    No. Only under the actual profit regime is the depreciation charge deductible for IRPJ and CSLL. Under the presumed profit regime and the Simples Nacional, tax is calculated on revenue, and depreciation does not change the tax due, but it is still a real cost for setting prices. The difference between accounting and tax depreciation is tracked by the accountant in the Lalur.

    What are the limits of this calculator?

    It considers full years (without prorating the start month), a single useful life, and a single residual value, with no revaluation and no impairment test. Used assets, acquisitions with incentives (incentive accelerated depreciation), and technical appraisal fees are not included. For the balance sheet and taxes, confirm the rates and classification with your accountant.