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Expenses

As proof, please submit the statement(s) from the specialist company carrying out the work in accordance with sect. 21 of the Energy Saving Ordinance (EnEV).



Which measures for energy-efficient building renovation are eligible for tax incentives?

The climate protection programme, with its expanded funding programmes, ensures that as many property owners as possible can invest in modernising their homes when needed. The following measures for energy-efficient building renovation are supported under the climate protection programme:

  • Wall insulation
  • Roof insulation
  • Storey ceiling insulation
  • Renewal of windows or external doors
  • Renewal or installation of a ventilation system
  • Renewal of the heating system
  • Installation of digital systems for optimising energy operation and consumption
  • Optimisation of existing heating systems.

In addition, energy-related construction supervision and specialist planning are eligible for tax incentives.

Technical minimum requirements apply to these measures, which must be met for funding. For this reason, the tax reduction under § 35c can only be claimed if a corresponding certificate is submitted with the tax return. The certificate can be confirmed by a specialist company or an energy consultant (a person authorised to issue certificates under § 21 Energy Saving Ordinance).

Admittedly, when thinking of energy measures, one primarily considers insulation, the renewal of windows and external doors, or the renewal of the heating system. It is somewhat less known that since 2021, "summer heat protection" is also eligible for funding. This is stated - somewhat hidden - in Appendix 4a to the ESanMV.

It specifically states: "Funding is provided for the replacement or initial installation of external sun protection systems with optimised daylight provision, for example, through light guidance systems or radiation-dependent control. The requirements of DIN 4108-2:2013-02 for minimum summer heat protection must be met."

The "Second Ordinance Amending the Energy-Efficient Renovation Measures Ordinance" has transferred changes to the "Federal Funding for Efficient Buildings (BEG) - Individual Measures" to ensure the technical consistency of the funding. This includes the removal of funding for gas-powered heat pumps, gas condensing technology, and gas hybrid heating systems, as well as adjustments to building and heat network requirements. For biomass heating systems, the BEG changes to room heating efficiency and particulate matter are implemented.

This ordinance applies to measures from 31 December 2022.

Which measures for energy-efficient building renovation are eligible for tax incentives?



What is the funding amount for energy-efficient building renovation?

The funding can be claimed for several individual measures, which can be carried out independently of each other.

For individual measures in energy-efficient building renovation, 20% of the expenses (max. 40,000 Euro per residential property) are eligible.

The funding is spread over three years. In the calendar year of completion of the energy measure and in the following calendar year, 7% of the expenses (max. 14,000 Euro annually) can be deducted from the tax liability, and in the third year, a further 6% of the expenses (max. 12,000 Euro).

For energy-related construction supervision and specialist planning, 50% of the costs incurred are deductible. You can find professionally qualified energy consultants for the planning and supervision of energy renovation projects throughout Germany at, among others, www.energie-effizienz-experten.de.

The funding can be claimed by a large number of homeowners. The tax incentive came into effect on 1 January 2020. The deduction is made directly from the individual tax liability.

What is the funding amount for energy-efficient building renovation?



What alternatives are there to tax incentives?

As an alternative to tax incentives, public building funding programmes can be used. These include, for example, low-interest loans or tax-free grants offered by the Kreditanstalt für Wiederaufbau (KfW Bank), the Federal Office for Economic Affairs and Export Control (BAFA), and state-owned development banks.

If you make use of one of these funding programmes, simultaneous tax incentives for the same energy renovation measure are not possible.

It is harmless if you have received grants solely for energy consulting. In this case, no tax reduction can be claimed for the costs of the energy consulting. However, for the energy measures carried out as a result of the energy consulting, for which no public funding was received, the tax reduction can be applied for.

What alternatives are there to tax incentives?



What conditions must be met to claim the tax reduction?

Requirements for tax reduction for energy-efficient measures under § 35c EStG

To claim the tax reduction for energy-efficient measures under § 35c EStG, certain conditions must be met:

  • Owner-occupation of the property: The property must be used for own residential purposes or provided free of charge to other persons.
  • Location of the property: The residential building must be located in Germany or within the EU or EEA.
  • Age of the property: At the start of the energy-efficient measure, the residential building or apartment must be at least 10 years old.
  • Certificate according to the Energy Saving Ordinance (EnEV): A certificate according to § 21 EnEV from a specialist company or energy consultant must be available. This certificate is generally issued for the owner(s) of the property.
  • Invoice with correct details: You must have received an invoice containing the following details:
    • The eligible energy-efficient measures.
    • The labour of the specialist company.
    • The address of the eligible property.
  • Payment to the service provider's account: Payment must be made cashless to the service provider's account. Cash payments, cash deposits, partial cash payments or cash cheques are not eligible.
Special features and notes
  • Instalment payments: The tax reduction can only be claimed after the invoice has been paid in full. Partial payments or instalments only lead to a reduction with the final payment. This has been decided by the Federal Fiscal Court (BFH): The tax reduction can only be applied once the entire invoice amount has been paid (BFH ruling of 18.5.2017).
  • Full payment of the invoice: The measure is only considered complete when the invoice is fully paid. Partial payments are not sufficient to claim the reduction in the respective tax year.
  • Combination with other tax reductions: If the tax reduction under § 35a para. 3 EStG (craftsman services) is claimed for the labour costs of an energy-efficient measure, additional funding under § 35c EStG is excluded.
Practical example

A couple had a new boiler installed in 2021. The total costs amounted to 8.000 Euro. The couple paid 200 Euro monthly in instalments. In 2021, only 2.000 Euro were paid. The tax office rejected the tax reduction because full payment would not be made until 2024. The tax reduction for energy-efficient measures can only be claimed with the final payment.

Conclusion

To receive the tax reduction under § 35c EStG, you must ensure that the invoice is fully paid and that all formal requirements, such as the issuance of a certificate and correct invoicing, are met. Make sure that no cash payments are made, and plan the payment in the respective tax year accordingly to claim the reduction promptly.

What conditions must be met to claim the tax reduction?



What applies to homeowners' associations?

If energy efficiency measures are carried out on a building consisting of several owner-occupied flats, a certificate must generally be issued for each individual flat. It is acceptable for the specialist company to issue a collective certificate for simplification purposes if the renovation expenses relate to the entire building or if the expenses attributable to the private property of individual flats can be clearly and unambiguously allocated to the individual flats.

If the owners' association has appointed a manager to handle its tasks and interests, the manager should be addressed as the client. In these cases, it is sufficient for the manager to allocate the expenses attributable to the co-ownership according to the ratio of the co-ownership share and inform the individual flat owner.

To do this, the manager creates a number of copies of the specialist company's certificate corresponding to the number of beneficiaries, on which they note the amount of expenses attributable to each beneficiary for the entire building and allocate the expenses attributable to the private property of individual flats to the specific flat owners.

What applies to homeowners' associations?



Which companies can issue a specialist certificate?

Any specialist company that meets the requirements of Section 2 of the "Energetische Sanierungsmaßnahmen-Verordnung ESanMV".

All companies operating in the following trades are considered "specialist companies":

  • Masonry and concrete work,
  • Plastering work,
  • Painting and varnishing work,
  • Carpentry and joinery work,
  • Thermal, cold and sound insulation work,
  • Stonemasonry and stone carving work,
  • Well construction work,
  • Roofing work,
  • Plumbing work,
  • Glazing work,
  • Installation and heating work,
  • Refrigeration engineering,
  • Electrical engineering and installation,
  • Metal construction,
  • Stove and heating construction,
  • Roller shutter and sun protection technology,
  • Chimney sweeping, tiling, slab and mosaic laying work,
  • Concrete stone and terrazzo production,
  • Window installation (with appropriate specialisation).

Until 2021: Any person authorised to issue energy performance certificates under Section 21 EnEV. This group includes:

Energy consultants, i.e. energy consultants approved by BAFA for the "Energy Consulting for Residential Buildings" funding programme.

Energy efficiency experts listed for the KfW funding programme "Energy-efficient Construction and Renovation – Residential Buildings" (KfW programmes 151/152/153 and 430).

All other persons with authorisation to issue under Section 21 EnEV (e.g. due to a university degree qualifying for a profession mentioned in Section 21 EnEV in conjunction with further training in energy-saving construction).

The prerequisite is that a person from the above-mentioned group has been commissioned by the building owner or the executing specialist company with the planning support or supervision. The energy consultant's certificate must state the client. The existence of the authorisation to issue under Section 21 EnEV must be confirmed.

From 2022: Persons with authorisation to issue under Section 88 of the Building Energy Act (GEG), who have been commissioned by the company or the taxpayer with the planning support or supervision of the energy measure.

Note: The regulation amending the Energetische Sanierungsmaßnahmen-Verordnung of 14 June 2021, BGBl. I p. 1780, adapted the ESanMV to the new Federal Funding for Efficient Buildings.

The Federal Ministry of Finance describes in detail in a decree (BMF letter of 31.3.2020, IV C 1 - S 2296-c/20/10003) the requirements for issuing such certificates.

The "Second Regulation Amending the Energetische Sanierungsmaßnahmen-Verordnung" has transferred changes to the "Federal Funding for Efficient Buildings (BEG) - Individual Measures" to ensure the technical alignment of the funding. This includes the removal of funding for gas-powered heat pumps, gas condensing technology and gas hybrid heating systems, as well as adjustments to building and district heating network requirements. For biomass heating systems, the BEG changes to room heating efficiency and particulate matter are implemented.

This regulation applies to measures from 31 December 2022.

The costs for the energy consultant are to be considered at 50 percent of the expenses in the year the measure is completed, deviating from the general regulation, and not spread over three years. The costs for the energy consultant as well as the costs for issuing the certificate under Section 35c (1) EStG are each - like the expenses for the energy measure itself - covered by the maximum tax reduction amount of 40,000 Euro (BMF 14.1.2021, IV C 1 - S 2296-c/20/10004 :00, BStBl 2021 I p. 103 para. 50).

 

Which companies can issue a specialist certificate?


Field help

Start of the measure

Enter the start date of the energy-efficiency measure.

The start date is as follows:

  • Measures subject to approval: the day the application is submitted.
  • Approval-free measures with construction documents to be submitted: the day of submission of the documents.
  • Measures not requiring approval: the actual start of construction work on site.

The tax reduction is only granted when the measure has been completed and the invoice has been paid in full (Federal Fiscal Court's (BFH) ruling dated 13.08.2024, IX R 31/23).

Issue of a statement

The expenses for issuing a technical certificate can also be claimed for tax purposes.

The statement of the energy measure can be confirmed by a specialist company or an energy consultant (a person authorised to issue statements in accordance with § 21 of the Energy Saving Ordinance).

Installation or replacement for summer thermal protection

Summer thermal insulation includes the installation or replacement of roller shutters and external shading elements that help to protect interior rooms from excessive heating.

Since 2021, this summer heat protection has also been eligible for funding. Specifically, this means that funding is available for the replacement or initial installation of external sun protection devices, such as roller shutters or blinds. It is important that these systems provide optimised daylighting, for example, through light-directing systems or automatic controls that are based on the position of the sun.

This funding is based on the requirements of Form 4a of the Energy-Efficient Renovation Measures Ordinance (ESanMV). To receive funding, the technical requirements of DIN 4108-2:2013-02 for summer minimum heat protection must be met. This standard ensures that the measures achieve the desired effect and that indoor temperatures remain comfortable even during periods of strong sunlight.

Executive specialist company

Enter the name of the specialist company that carried out the energy measure.

The specialist company or an energy consultant issues the certificate, which you must submit to your tax office.

Specialist firms that are working in the field of building renovation are entitled to issue the technical certificate. In addition, the certificate can also be issued by an energy advisor (a person authorised to issue energy performance certificates in accordance with sect. 21 of the Energy Saving Ordinance).

The certificate is always issued to the owner(s) of the residential building or flat.

Flat owners' associations: If energy measures are carried out on a building consisting of several owner-occupied flats, a separate certificate must be issued for each individual flat.

End of the measure

Enter here the end date of the energy-efficiency measure.

You can only apply for the tax reduction once the work has been completed and you have a statement from a specialist company or energy consultant.

If the measure was only completed in the year 2025, the expenses can only be claimed for tax purposes in the following year.

The tax reduction is only granted when the measure has been completed and the invoice has been paid in full (Federal Fiscal Court's (BFH) ruling dated 13.08.2024, IX R 31/23).

Thermal insulation of walls

In the case of thermal insulation of walls, the first-time installation or the renewal of exterior building parts of existing buildings are eligible for tax incentives. This includes, among other things:

  • insulation of exterior walls,
  • сore insulation for double-shell brickwork,
  • insulation of exterior walls of monuments and buildings worthy of preservation,
  • interior insulation of half-timbered exterior walls and renovation of infill walls,
  • insulation of wall surfaces against unheated rooms,
  • insulation of wall surfaces against the ground.
Thermal insulation of roof surfaces

In the case of thermal insulation of roof surfaces, the first-time installation or renewal of exterior components of existing buildings is eligible for tax incentives. This includes, among other things, the insulation of

  • pitched roofs and the related valley beams,
  • roof surfaces of dormers,
  • dormer cheeks,
  • flat roofs.
Thermal insulation of ceilings

In the case of the thermal insulation of top floor ceilings, the first-time installation, replacement or renewal of exterior building components of existing buildings are eligible for tax incentives. This includes, among other things, the insulation of the

  • insulation of the top floor ceilings to undeveloped attics,
  • basement ceilings,
  • ceilings to unheated rooms,
  • floor ceilings downwards against outside air,
  • floor surfaces against the ground.
Renewal of windows / external doors

As part of the windows and / or external doors renovation, the first-time installation of external doors, windows and French doors, including external sun protection devices, is eligible for tax incentives.

Renewal and replacement are eligible, provided that the minimum requirements for energy efficiency are met. This applies to the following areas:

  • windows, balcony and patio doors with multi-pane insulating glazing
  • low-barrier or burglar-resistant windows, balcony- and terrace doors
  • strengthening of windows and box-type windows as well as windows with special glazing
  • roof windows
  • replacement of windows on historical buildings or buildings worthy of preservation
  • strengthening of windows on historical buildings or buildings worthy of preservation
  • external doors of heated rooms
Renewal or installation of a ventilation system

The renewal or installation of a ventilation system is eligible for tax incentives. The following systems are eligible:

  • demand-controlled central exhaust air systems,
  • central, decentralised or room-by-room systems with heat exchangers
  • compact units for energy-efficient buildings
  • compact units with air-to-air/water heat pump

The ventilation systems must comply with the requirements of the Ecodesign Directive on the Ecodesign of Domestic Ventilation Systems applicable at the time of installation.

Renewal of the heating system

Renewal of the following heating systems is eligible for tax incentives:

  • solar collector systems
  • biomass systems
  • heat pumps
  • gas condensing technology ("Renewable Ready")
  • hybrid systems
  • fuel cells
  • mini combined heat and power (CHP) (combined heat and power plants)
  • connection to a heating network
Digital systems for energy optimisation

The implementation of measures for operational optimisation through electronically controlled systems with the aim of improving energy efficiency is eligible for tax incentives.

The following list shows typical eligible measures for optimising energy operation and consumption:

  • smart metres, measurement, control and regulation technology,
  • system technology for data exchange,
  • switching technology, door and drive systems,
  • energy management systems, regulation,
  • necessary electrical work for the implementation of the measure.
Optimisation of existing heating systems

The optimisation of existing heating systems is only eligible for tax incentives if they are more than two years old.

Among other things, the following measures are eligible:

  • the inventory and, if necessary, the analysis of the actual state,
  • the implementation of hydraulic adjustment and
  • the implementation of all necessary measures to improve energy efficiency on the entire heating system
Has a gas condensing boiler been installed?

Select "yes" if a gas condensing boiler has been installed in your building. This modern heating technology uses the energy in the fuel particularly efficiently by also using the heat contained in the flue gas.

If it is a "Renewable Ready" system, which is gas condensing technology that is prepared for the subsequent integration of renewable energies, you should be aware that the hybridisation must take place within two years of installation.

Expenses

Enter here the expenses that you have incurred due to the installation of the gas condensing boiler and the associated work.

These expenses can be taken into account for tax purposes, provided the system meets the technical requirements.

Is there evidence of hybridisation?

Select "yes" if you already have a confirmation of successful integration of renewable energy at your Renewable Ready installation.

This certificate is required to claim the tax reduction for hybridisation.

Is the proof of hybridisation submitted?

Select "yes" if you are submitting the proof of hybridisation with your tax return. Without this proof, the tax relief cannot be granted.

Was the planning / supervision carried out by an energy consultant?
Costs for the energy consultant

Enter the expenses that you incurred because an energy consultant was commissioned with the planning or supervision of the energy measure.

The expenses for energy consultants who are approved by the Federal Office of Economics and Export Control (BAFA) as professionally qualified for the incentive programme "Energy Consulting for Residential Buildings" and the expenses for energy efficiency experts who are listed for the KfW incentive programme "Energy-efficient Construction and Refurbishment - Residential Buildings" (KfW programmes no. 151 / 152 / 153 and 430) will be taken into account.

Can you claim a deduction for the expenses as an extraordinary burden?
Exceptional costs included in the expenses for energy-efficiency measures
Exceptional costs included in the expenses for the energy consultant

Please enter your own expenses resulting from natural disasters (e.g. earthquakes, floods, storms, hail, etc.) as well as expenses due to care costs that can be taken into account as exceptional costs here.

These amounts may then not be additionally claimed in the exceptional costs section.

The tax office will then take these amounts into account accordingly.


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