Depreciation (amortyzacja) of fixed assets is one of the most important elements of accounting for every business in Poland. It is the process of systematically spreading the value of a fixed asset over its period of use, which directly affects the amount of tax-deductible costs (koszty uzyskania przychodu, KUP) and the company's financial result. A good understanding of how depreciation works lets business owners manage costs optimally and plan investments.
Choosing the right depreciation method is crucial to a company's tax strategy. Different methods offer different financial benefits and can significantly affect the company's cash flows. That is why it is so important to know all the available options and how they work in practice.
What fixed assets are in the context of depreciation
Fixed assets are tangible assets of a business with an expected period of use of more than one year. For an asset to qualify as a fixed asset, it must meet certain legal criteria and be complete and fit for use on the day it is put into use in the business.
Fixed assets must be used in the business or made available for use under rental or lease agreements. How a fixed asset is classified determines how it is settled for tax and accounting purposes throughout its period of use
Fixed assets mainly include real estate, including structures, buildings and premises constituting separate property. An equally important group consists of production machinery and equipment, which are the basis of many businesses' activities. Means of transport, such as cars, lorries or construction machinery, are also depreciated as fixed assets.
Other higher-value items that serve the business for more than a year can also qualify as fixed assets. This may include specialist tooling, high-value office furniture or computer hardware (software and licences are intangible assets, depreciated under separate rules).
The initial value of a fixed asset includes the purchase price together with the costs of bringing it to a condition fit for use. All costs related to installation, transport and preparation for use increase the initial value of the fixed asset
The essence of fixed asset depreciation
Depreciation of fixed assets is the wear and tear of a fixed asset expressed in money, in the form of systematic depreciation charges. The process involves spreading the value of a given asset in a planned way over its entire depreciation period, which makes it possible to determine the current value of the fixed asset objectively.
The value of a fixed asset decreases under the influence of various factors, which can be divided into two main categories. The first are economic factors, such as the introduction of more efficient and cheaper production methods or new technologies on the market, which make existing fixed assets obsolete.
The second category is the physical use of the item, which leads to natural wear and loss of technical value. This process is unavoidable and results from the normal operation of the fixed asset in the business.
Depreciation of fixed assets counts as a tax-deductible cost in a given period, which directly reduces the tax base. As a result, the business pays lower income tax, which improves its liquidity
The first depreciation charges can be made at the earliest in the month following the month in which the fixed asset was entered in the register, which must happen no later than in the month it is handed over for use (Article 22h(1) point 1 and Article 22d(2) of the PIT Act). The exception is one-off depreciation, which lets you recognise the depreciation charge as early as the month the fixed asset is entered in the register (Article 22k(8)), and for a value of up to PLN 10,000 – in the month it is put into use or in the following month (Article 22f(3)).
Depreciation ends when the total depreciation charges equal the initial value of the fixed asset or when it is sold or liquidated. After depreciation ends, the fixed asset can still serve the business, but it no longer generates further tax-deductible costs.
Methods of depreciating fixed assets – an overview of options
Polish tax law provides for several methods of depreciating fixed assets, each with a different mechanism for calculating charges. The basic methods are straight-line depreciation (also with increased or individual rates) and declining balance depreciation, as well as a special one-off method for certain categories of fixed assets (Articles 22i–22k of the PIT Act, Articles 16i–16k of the CIT Act). The units-of-production method, based on actual wear, can be used only for accounting (balance sheet) depreciation, where the period and rate are set based on, among other things, the output of the fixed asset (Article 32(2) of the Accounting Act), and not for tax purposes.
The choice of a particular depreciation method is final – once chosen, the method for a given fixed asset can no longer be changed. That is why it is so important to study carefully how each method works and analyse its pros and cons before deciding.
The decision on the depreciation method should take into account the nature of the business, planned cash flows and the long-term tax strategy. Each method offers different financial benefits in different periods of use of the fixed asset
The straight-line method is the most popular way of depreciating assets because of its simplicity and predictability. It involves even charges over the entire period of use, which makes cost planning and budgeting easier.
The declining balance method allows higher charges in the first years of use, which can be advantageous for businesses that need to recover their investment quickly. The one-off method, on the other hand, lets you write off the entire value of the fixed asset immediately (within the statutory limits), which significantly affects tax-deductible costs in the year it is entered in the register.
Straight-line depreciation – rules and use
The straight-line method of depreciating fixed assets is based on the assumption that the fixed asset wears out evenly over its entire period of use. In practice, this means making depreciation charges at a fixed rate set out in the annex to the Personal Income Tax Act (PIT Act) and the Corporate Income Tax Act (CIT Act).
Depreciation rates are set on the basis of the Classification of Fixed Assets (Klasyfikacja Środków Trwałych, KŚT 2016, Regulation of the Council of Ministers of 3 October 2016, Journal of Laws (Dz.U.) 2016 item 1864), which assigns each type of fixed asset a symbol and a group, while the Schedule of annual depreciation rates (Annex No. 1 to the PIT Act and to the CIT Act) assigns the rate for a given symbol. This system ensures consistent tax settlements and makes it easier to keep the fixed asset register.
The basis for calculating depreciation charges is the initial value of the fixed asset, which includes the purchase price together with the costs of bringing it to a condition fit for use. The monthly depreciation charge is calculated by dividing the annual charge by twelve months. For passenger cars, charges are a tax-deductible cost only on the value up to the limit – from 2026, PLN 100,000 (CO2 emissions of at least 50 g/km), PLN 150,000 (below 50 g/km) or PLN 225,000 (electric and hydrogen cars) – Article 23(1) point 4 of the PIT Act, Article 16(1) point 4 of the CIT Act.
The straight-line method allows you to lower the depreciation rate – from the month the fixed asset is entered in the register or from the first month of each subsequent tax year (Article 22i(5) of the PIT Act), which can be useful if economic conditions change. Increasing the rate is allowed only with the coefficients from Article 22i(2), under the conditions described below
The practical use of the straight-line method can be illustrated with the example of a business that bought a machine worth PLN 210 thousand. If the annual depreciation rate under the annex is 20 percent, the total annual depreciation charges amount to PLN 42 thousand, and the monthly charges to PLN 3,500.
The straight-line method is particularly suitable for fixed assets used regularly and evenly throughout their economic life. It works well for buildings, production machinery or vehicles used under standard operating conditions.
Individual straight-line depreciation – flexibility in settlements
Individual straight-line depreciation uses the same mechanism for calculating charges as the standard straight-line method, but it lets the taxpayer set an individual depreciation rate. This option is particularly useful when the fixed asset was previously used by another entity or was improved before being entered in the register.
Using an individual depreciation rate requires observing a minimum depreciation period, which varies depending on the initial value of the fixed asset. These rules aim to prevent tax abuse and ensure that costs are spread rationally over time.
For used or improved fixed assets classified in groups 3-6 and 8 of the Classification of Fixed Assets, the minimum depreciation period is 24 months for a value not exceeding PLN 25 thousand. For a value above PLN 25 thousand and not exceeding PLN 50 thousand, the period increases to 36 months, and in other cases to 60 months (Article 22j(1) point 1 of the PIT Act)
Means of transport are subject to special rules on individual depreciation. For this category of fixed assets, including passenger cars, the individual depreciation period cannot be shorter than 30 months, regardless of the vehicle's initial value.
To use an individual depreciation rate, the business owner must prove that the purchased fixed asset was previously used by another entity for at least 6 months. Such proof allows the fixed asset to be treated as used, which opens the possibility of applying a more favourable depreciation rate.
The provision requires use by an entity other than the taxpayer (Article 22j(2) point 1 of the PIT Act), so the period in which the taxpayer itself used the vehicle under a lease before buying it out, as a rule, does not meet the definition of a used vehicle. This is an important limitation to take into account when planning tax settlements
Another option is to treat the fixed asset as improved, which means that the expenses on improvement incurred before it was entered in the register amounted to at least 20 percent of the initial value. This option applies to fixed assets classified in groups 3-6 and 8 of the Classification of Fixed Assets and to means of transport.
Accelerated straight-line depreciation – for special conditions of use
Accelerated straight-line depreciation is a variant of the standard straight-line method that can be used for fixed assets used in special ways. This method takes into account the more intensive wear of fixed assets working in difficult operating conditions.
The basis for calculating charges in the accelerated method is the rates from the annex to the tax act, which are increased by applying certain coefficients. The system of coefficients takes into account different categories of fixed assets and their conditions of use.
For buildings and structures used in worsened conditions, a coefficient of 1.2 applies, which means the standard depreciation rate is increased by 20 percent. For buildings and structures operated in poor conditions, the coefficient is 1.4.
Machinery, equipment and means of transport can be depreciated using a coefficient of 1.4, which significantly speeds up depreciation charges. The highest coefficient of 2.0 is available for machinery and equipment in groups 4–6 and 8 of the Classification of Fixed Assets subject to rapid technical progress (Article 22i(2) of the PIT Act)
Using the accelerated method requires justifying the special conditions of use of the fixed asset. Worsened conditions may include working in an environment with increased humidity, temperature or dust. Poor conditions are extreme operating conditions that significantly speed up wear.
The 2.0 coefficient for machinery and equipment in groups 4–6 and 8 of the Classification subject to rapid technical progress is particularly important in high-tech industries. According to the explanatory notes to the Schedule of rates, this covers equipment with microprocessor systems or computer systems – in practice, IT and electronic equipment or advanced automation systems that quickly lose economic value due to technological development.
Declining balance method – maximising charges in the early years
The declining balance method of depreciating fixed assets has a completely different mechanism for calculating charges compared with the straight-line method. The method is based on applying an increased rate (the rate from the Schedule multiplied by a coefficient of up to 2.0) to a base that decreases from year to year, so the amount of charges falls systematically each year (Article 22k(1) of the PIT Act).
The use of the declining balance method is limited to certain categories of fixed assets. It can be used only for machinery and equipment classified in groups 3-6 and 8 of the Classification of Fixed Assets, as well as for means of transport excluding passenger cars.
The base for calculating charges for the next year in the declining balance method is determined by deducting the depreciation charges made so far from the initial value of the fixed asset (the net value at the beginning of the year). This mechanism systematically reduces the base for calculating charges in subsequent years of use
A key feature of the declining balance method is the obligation to switch to the straight-line method when the annual declining balance charge becomes lower than the annual charge under the straight-line method. This change takes place at the beginning of a new tax year and requires comparing both methods at the beginning of each year.
The practical use of the declining balance method can be illustrated with the example of a business that bought a machine worth PLN 400 thousand classified in group 5 of the Classification of Fixed Assets. The standard depreciation rate is 20 percent and the declining balance coefficient is 2.0, which gives an increased rate of 40 percent. For simplicity, the example shows full years of charges (in reality, in the year the asset is entered in the register, charges are made only for the months following the month of entry).
| Year | Depreciation base | Rate | Annual charge | Monthly charge |
|---|---|---|---|---|
| 1 | PLN 400,000 | 40% | PLN 160,000 | PLN 13,333 |
| 2 | PLN 240,000 | 40% | PLN 96,000 | PLN 8,000 |
| 3 | PLN 400,000 (initial value) | Straight-line 20% | PLN 80,000 | PLN 6,667 |
In the first year, the annual charge is PLN 160 thousand and the monthly charge is PLN 13,333. In the second year, the calculation base is PLN 240 thousand, so the annual charge is PLN 96 thousand and the monthly charge is PLN 8 thousand.
In the third year, the declining balance base would be PLN 144 thousand, which would give an annual charge of PLN 57,600. Since this is less than the straight-line charge of PLN 80 thousand, the business must switch to the straight-line method
One-off depreciation – writing off the value immediately
The one-off method of depreciating fixed assets lets you write off the entire value of a fixed asset immediately in the year it is entered in the register. It is the most aggressive depreciation method, with a significant effect on tax-deductible costs and the company's financial result.
One-off depreciation is possible in three situations. The first concerns fixed assets classified in groups 3-8 of the Classification of Fixed Assets excluding passenger cars and is available only to small taxpayers (gross sales revenue in the previous year of up to the equivalent of EUR 2 million; in 2026 – PLN 8,517,000) and to business owners in the year they start their business (Article 22k(7) and (11) of the PIT Act, Article 16k(7) of the CIT Act).
The one-off depreciation charge in a given tax year cannot exceed the equivalent of EUR 50 thousand – PLN 213,000 in 2026 and PLN 219,000 from 1 January 2027 (converted at the NBP exchange rate from the first business day of October of the previous year, Article 22k(12)). This is so-called one-off depreciation as de minimis aid, which is subject to special EU rules – total de minimis aid cannot exceed EUR 300,000 over 3 years (Commission Regulation (EU) 2023/2831)
The second situation concerns low-value fixed assets, i.e. those worth no more than PLN 10 thousand. In this case, the business owner can decide to write off the value of the fixed asset in one go regardless of the de minimis aid limits (Article 22f(3) and Article 22k(9)). The third situation is a one-off charge on brand-new fixed assets in groups 3–6 and 8, available to all business owners up to PLN 100,000 in a tax year and not constituting de minimis aid (Article 22k(14)–(15) of the PIT Act, Article 16k(14) of the CIT Act).
One-off depreciation as de minimis aid is particularly attractive for small taxpayers, who can use it to significantly reduce their tax base in the year of the investment. The limit of EUR 50 thousand is calculated jointly for all fixed assets covered by this form of depreciation in a given tax year.
Using one-off depreciation requires meeting certain formal and substantive conditions. The business owner must keep appropriate documentation and records confirming that the method has been applied correctly.
Classification of fixed assets and depreciation rates
The Classification of Fixed Assets is the basis of the depreciation system in Poland – it is to its symbols that the Schedule of annual depreciation rates assigns rates for individual categories of fixed assets. This system ensures consistent tax settlements and makes it easier for business owners to classify their fixed assets correctly.
The Classification divides fixed assets into ten groups (0–9), each covering certain categories of assets; the rates in the Schedule mainly concern groups 1–8 (group 0 mainly covers land, which is not depreciated). These groups have different depreciation rates, which reflect the average period of use of the various types of fixed assets.
Group 1 covers buildings and premises with the longest period of use, which is why it has the lowest depreciation rates (2.5% for non-residential buildings and premises). The highest rates apply to assets that wear out or become obsolete quickly, e.g. computer sets in group 4 (30%) and some equipment in group 8 (25%)
Depreciation rates are expressed as an annual percentage and are the basis for calculating depreciation charges under all depreciation methods. In the straight-line method, these rates are applied directly, while in the declining balance and accelerated methods they can be modified by the appropriate coefficients.
Correct classification of a fixed asset is crucial for correct tax settlements. Incorrect classification can lead to the wrong depreciation rate being applied and, as a result, to problems with the tax authorities.
A manufacturing company bought a modern production line worth PLN 2 million. The line was classified in group 4 of the Classification of Fixed Assets with an annual depreciation rate of 18 percent. By using the straight-line method, the company can write off PLN 360 thousand each year, which significantly reduces its tax base.
Fixed asset register and depreciation documentation
Keeping a correct fixed asset register is the basis for managing depreciation effectively. The register must contain all relevant information about fixed assets, including the initial value, the date of putting into use, the depreciation method used and the amount of depreciation charges made so far.
Depreciation documentation should include detailed calculations of depreciation charges, the reasons for choosing the depreciation method and evidence confirming that the rates applied are correct. All documents must be kept in line with the regulations on accounting documentation.
The fixed asset register can be kept in electronic form, but it must ensure data integrity and allow verification. The register system should make it possible to generate depreciation reports and analyses of the condition of fixed assets
Keeping the fixed asset register involves several key stages:
- Entering the fixed asset in the register and determining its initial value
- Classifying the fixed asset and setting the depreciation rate
- Choosing the depreciation method and starting to calculate charges
- Systematically booking monthly depreciation charges
- Monitoring the technical condition and book value of the fixed asset
- Documenting any changes in how it is used
- Ending depreciation or removing the fixed asset from the register
Modern IT systems make keeping the fixed asset register much easier and automate the calculation of depreciation charges. These systems can be integrated with the company's accounting, which ensures consistent financial data. We keep the fixed asset register and depreciation schedule for clients as part of our accounting services.
Effect of depreciation on financial statements
Depreciation of fixed assets directly affects all the basic financial statements of a business. In the balance sheet, depreciation affects the value of fixed assets through accumulated depreciation, which is presented as an adjustment to the initial value of fixed assets.
In the profit and loss account, depreciation charges are an operating cost that directly affects the company's financial result. Higher depreciation charges mean lower operating profit, while for income tax purposes income is reduced by tax depreciation charges, which may differ from accounting ones.
The cash flow statement is not directly affected by depreciation, because depreciation charges are not a cash outflow – under the indirect method, depreciation is added back to net profit as an adjustment. However, depreciation affects cash flows indirectly through its effect on the amount of income tax
The depreciation method has a significant effect on the company's financial ratios. Aggressive depreciation methods, such as declining balance or one-off depreciation, lead to faster reduction in asset values and higher costs in the early years.
Financial analysis of a business must take its depreciation policy into account when assessing financial results and comparing it with other entities. Different depreciation methods can lead to different profitability and efficiency ratios under identical economic conditions.
Tax optimisation through depreciation
Depreciation of fixed assets is one of the most important tax optimisation tools available to business owners. The right choice of depreciation method can significantly affect the amount of income tax and the company's cash flows.
A strategy for tax optimisation through depreciation should take several key factors into account. The first is the current and expected financial situation of the business, including the level of revenue and profitability. The second factor is investment plans and cash flow needs.
Businesses with high revenue may prefer aggressive depreciation methods that quickly reduce the tax base. Growing businesses, on the other hand, may choose methods that spread costs more evenly over time
Depreciation planning should be part of the company's long-term tax strategy. Decisions on depreciation methods affect many years, so they require careful analysis and forecasting.
Tax optimisation through depreciation can include various techniques:
- Making the most of the one-off depreciation limits
- Using the declining balance method for high-value fixed assets
- Using accelerated depreciation in justified cases
- Planning when fixed assets are put into use
- Optimising the structure of investments in terms of the available depreciation methods
