Accounting for Construction Companies - A Practical Guide

The construction industry is one of the sectors with the most complex accounting and tax rules. The split payment mechanism, specifics of long-term contracts, subcontractor settlements, and special revenue recognition rules all require precise bookkeeping. This guide covers the key accounting issues for construction and renovation companies operating in Poland.

Tax Forms in Construction

Lump Sum Tax (Ryczalt)

Construction companies can use the lump sum at a 5.5% rate for construction work. This is one of the lowest lump sum rates and often the most cost-effective tax form for companies with low material costs (e.g., renovation crews primarily providing labor services).

On lump sum, you maintain a simplified revenue register and cannot deduct business expenses. Check the profitability of lump sum using our calculator.

Flat Tax at 19%

Cost-effective at higher income levels with significant costs (building materials, equipment, subcontractors). You maintain a KPiR or full accounting books.

Progressive Tax Scale (12% and 32%)

Advantageous at lower incomes or when you want to use the tax-free allowance (30,000 PLN). At income above 120,000 PLN annually, the 32% rate makes this form unattractive.

Companies in Construction

Larger construction firms often operate as limited liability companies (sp. z o.o.) or limited partnerships (spolka komandytowa). A limited liability company is subject to CIT (9% for income up to 2 million EUR, 19% above). It provides personal asset protection, which is important in an industry with elevated liability risk.

VAT in Construction - Key Mechanisms

VAT Rates for Construction Services

Two main VAT rates apply in construction:

  • 8% - residential construction covered by the social housing program (residential buildings up to 300 sqm, apartments up to 150 sqm). Applies to construction, renovation, modernization, and maintenance.
  • 23% - commercial, industrial, and residential construction exceeding the area limits.

VAT rate qualification requires precise determination of the building's character. For mixed-use buildings (e.g., with both residential and commercial parts), rates are applied proportionally based on floor area.

Split Payment Mechanism

Mandatory split payment applies to transactions exceeding 15,000 PLN gross when the subject involves goods or services listed in Annex 15 of the VAT Act. In construction, this includes:

  • Construction works (PKWiU section F)
  • Steel and steel products
  • Fuels
  • Concrete and metal construction components

With mandatory split payment, you include the annotation "Mechanizm podzielonej platnosci" (Split payment mechanism) on the invoice. The buyer is obligated to pay the VAT amount to the seller's special VAT account.

Consequences of Failing to Apply Split Payment

Non-compliance with the split payment obligation carries risks:

  • A 30% sanction on the VAT amount that should have been paid via split payment
  • Loss of the right to deduct input VAT by the buyer
  • Joint and several liability for unpaid VAT

Reverse Charge vs Split Payment

Before November 1, 2019, the reverse charge mechanism applied to construction services provided by subcontractors. It was replaced by mandatory split payment. Currently, reverse charge applies only to transactions with EU counterparts (import of services, intra-community acquisition of goods).

Long-Term Contracts - Revenue Recognition

The Challenge of Construction Contracts

Construction contracts last months or years. The question arises: when should revenue be recognized? At contract signing, partial acceptance of work, or only upon completion of the entire project?

Cash vs Accrual Method

Cash method (simplified): revenue is recognized when payment is received. Used by small companies on KPiR.

Accrual method: revenue is recognized when the service is performed (acceptance protocol), regardless of payment date. Mandatory with full accounting books.

Partial Acceptances and Phasing

For large contracts, work is divided into phases with partial acceptances. Each partial acceptance protocol serves as the basis for issuing an invoice and recognizing revenue. This benefits both cash flow and even distribution of tax burdens.

Advance Payments in Construction

Advance payments received before service completion are subject to VAT at the time of receipt. You issue an advance invoice. Upon completion, you issue a final invoice reduced by previously invoiced advances.

Subcontractor Settlements

Documenting Subcontractor Services

Subcontractor services are typically the largest cost for construction companies (after materials). Proper documentation requires:

  • A subcontracting agreement (preferably written)
  • Protocols of acceptance for completed work
  • Invoices from the subcontractor
  • Documentation confirming the scope of work performed

Investor's Joint Liability

Under Article 647(1) of the Civil Code, the investor bears joint and several liability with the general contractor for subcontractor remuneration, if the subcontractor was reported to the investor (or the investor knew about them). This affects risk management and contract structure.

Subcontractors and Split Payment

Invoices from construction subcontractors exceeding 15,000 PLN gross require the split payment mechanism. Ensure your VAT account has sufficient funds to settle these payments.

Deductible Costs in Construction

Building Materials

Material purchases are a fundamental cost. You record them in KPiR column 10 (purchase of materials and goods). For large material purchases, you prepare a year-end physical inventory that adjusts costs for the value of unused materials.

Construction Equipment

  • Small tools (up to 10,000 PLN) - expensed immediately
  • Machinery and equipment (above 10,000 PLN) - depreciation at 14-20% annually
  • Equipment rental (excavators, cranes, scaffolding) - fully deductible

Transportation

  • Delivery and heavy vehicles - depreciation and operating costs
  • Passenger vehicles - depreciation limit of 150,000 PLN (225,000 PLN for electric)
  • Fuel for construction machinery - fully deductible

Employee Costs

  • Gross employee wages
  • Employer's ZUS contributions
  • Work clothing and personal protective equipment (PPE)
  • Mandatory health and safety training
  • Mandatory employee medical examinations

Insurance

  • Business liability insurance (mandatory for many contracts)
  • Construction all-risk insurance
  • Insurance and bank guarantees
  • Construction equipment insurance

Industry-Specific Issues

Warranty Retentions

Warranty retentions are common in construction - the client withholds 5-10% of the contract value as security for the warranty period (2-5 years). The retention constitutes revenue at the time of its release, not when it is withheld. This must be correctly reflected in the books.

Contractual Penalties

Contractual penalties for delays or defective workmanship are a common element of construction contracts. A penalty for defective work is not a deductible cost. However, a penalty for delays not caused by the contractor may be deductible - provided the circumstances are documented.

Additional and Substitute Works

Works beyond the contract scope require an annex or separate order. From an accounting perspective, they are treated as a separate service with a separate invoice.

Reporting Obligations

JPK_VAT

Active VAT taxpayers file monthly JPK_V7M. In the construction industry, correctly marking transactions subject to mandatory split payment (MPP code) is particularly important.

Tax Returns

Depending on the tax form:

  • PIT-28 (lump sum) - by April 30
  • PIT-36L (flat tax) - by April 30
  • PIT-36 (progressive scale) - by April 30
  • CIT-8 (companies) - by the end of the third month after the tax year ends

White List of VAT Taxpayers

Before making a transfer exceeding 15,000 PLN, verify that your contractor's bank account appears on the white list of VAT taxpayers. A transfer to an account not on the white list means the expense cannot be deducted as a business cost and carries the risk of joint VAT liability.

Summary

Accounting for a construction company requires thorough knowledge of VAT mechanisms (split payment, 8% and 23% rates), skillful settlement of long-term contracts, and proper documentation of subcontractor relationships. Errors in these areas can result in severe financial sanctions. Therefore, even a small construction firm should work with an experienced accountant familiar with the industry's specifics to ensure regulatory compliance and optimize tax obligations.