Germany's BEG Heating Subsidies 2026: Rates, Bonuses, Eligibility

Subsidy rates change during 2026 — every figure in this guide was verified as of September 2026. Germany reformed its heating grants on 21 July 2026 and will keep reducing them on a fixed six-month schedule, so confirm the current values at kfw.de before you apply.

What is the BEG Heizungsförderung and what changed on 21 July 2026?

The BEG Heizungsförderung is Germany's federal grant for replacing a heating system with a climate-friendly one — heat pumps, solar thermal, biomass, fuel cells or a district-heating connection — paid as a direct subsidy through KfW programme 458. On 21 July 2026 the scheme was reformed as part of the consolidation of the federal Klima- und Transformationsfonds, and the reform changed its character: the BEG is now degressive, meaning bonus rates and cost ceilings shrink on a published schedule every six months.

The July 2026 reform in brief:

• The heat pump Effizienzbonus (+5%) was eliminated, as was the €2,500 biomass emission-reduction surcharge.
• The Klimageschwindigkeitsbonus (climate-speed bonus) was cut from 20% to 16%, with further scheduled cuts every six to twelve months (see the degression section below).
• The Einkommensbonus was restructured from a flat 30% into three income tiers of 40%, 30% and 10%, plus a new Familienzuschlag that raises the income thresholds by a flat €10,000 for households with at least one minor child.
• The maximum eligible cost for the first dwelling unit fell from €30,000 to €28,000, and will drop a further €750 every six months until it reaches €22,000 by 2030.

Applications submitted by 20 July 2026 on the basis of a technical confirmation generated by 8 July 2026 were still processed under the old conditions; everything submitted since 21 July 2026 follows the rules below.

How much subsidy can you get for a heat pump or solar thermal system?

A self-occupying owner replacing a functioning oil boiler or a gas boiler at least 20 years old can combine grants worth up to 70% of eligible costs — up to 80% in the lowest income band. The components stack as follows:

Eligible costs are capped at €28,000 for the first dwelling unit, €15,000 each for units two to six, and €8,000 from the seventh unit onward. At the 70% cap, the maximum grant for a single-family home is therefore €19,600; households in the lowest income band (taxable income up to €30,000) are capped at 80%, worth up to €22,400.

Worked example: a self-occupying family with €38,000 of taxable household income and two minor children replaces a 22-year-old gas boiler with a heat pump. The Familienzuschlag raises the income thresholds by a flat €10,000, so €38,000 falls inside the 40% tier (normally ≤ €30,000). Base 30% + climate-speed 16% + income 40% = 86%, capped at 80% for this band. On €28,000 of eligible costs, the grant is €22,400.

For non-residential buildings, the parallel BEG track for Nichtwohngebäude (KfW 522, with BAFA handling envelope measures) applies tiered eligible-cost ceilings (€28,000 for the first 150 m² of net floor area, then per-m² amounts that fall with size), with its own heating-grant degression starting 1 February 2027. Separately, BAFA continues to fund heating optimisation and envelope measures at 15% (plus 5% with an iSFP renovation roadmap), and the §35c income-tax deduction (20% spread over three years) remains the alternative route — confirm its current 2026 status with a tax adviser.

Who is eligible — and which certificates must products carry?

Eligibility is defined product by product, and certification is the gatekeeper:

• Heat pumps must appear on the BAFA list of eligible heat pumps, achieve a seasonal performance factor (JAZ/SCOP) of at least 3.0, offer a smart-grid interface (SG-Ready), and — for air-source outdoor units — undercut the Ecodesign noise limits by at least 10 dB (required for applications since 1 January 2026).
• Solar thermal collectors receive the 30% base grant and must hold Solar Keymark certification issued on tests from an ISO 17025-accredited body (§71e GEG) and appear on the BAFA Anlagenliste. Uncovered pool absorbers are excluded.
• PVT hybrid collectors are fundable through two routes — as a solar thermal system (Solar Keymark-certified and BAFA-listed), or as the heat source for a heat pump (PVT-Wärmepumpen-Kombination), independent of the heat pump brand. The BEG is one of the few European schemes that names PVT explicitly, and classic combinations — solar thermal covering summer hot water while the heat pump rests — are funded too.

The certification logic favours manufacturers who test comprehensively: Solimpeks' Wunder flat-plate collectors (DIN CERTCO) and PV-T hybrid panels (Kiwa) carry Solar Keymark certification — precisely the certificate class §71e GEG demands.

The policy backdrop makes clean-heating grants the only route left: under the recast EPBD, EU member states have been barred from offering public financial incentives for stand-alone fossil-fuel boilers since 1 January 2025, and ETS2 will extend carbon pricing to heating fuels from 2028 — raising the running costs of the systems the BEG pays you to replace.

How do you apply for the KfW 458 grant?

Apply before you sign — the sequence is strict, and a contract that becomes binding too early voids the grant:

1. Commission a Bestätigung zum Antrag (BzA) from an Energieeffizienz-Experte or qualified installer (Fachunternehmer); this confirms the planned system meets the technical requirements.
2. Draft the supply/installation contract with a suspensive condition tied to the grant decision — the contract may be prepared, but must not take unconditional effect before the application is filed.
3. Submit the application in the KfW Zuschussportal, attaching the BzA.
4. Receive the grant decision, let the contract take effect, and carry out the works.
5. After commissioning, file the Fachunternehmererklärung (installer's declaration) and proof of costs in the portal.
6. The grant is paid out directly to your account.

What deadlines and degression steps come next?

The Klimageschwindigkeitsbonus now falls on a statutory schedule — each date is a hard deadline for locking in the higher rate:

In parallel, the €28,000 eligible-cost ceiling shrinks by €750 every six months until it reaches €22,000 by 2030, and non-residential heating grants begin their own degression on 1 February 2027.

Further adjustments to the heat pump grant structure — including product-origin criteria — have been announced for 2027, but according to the latest regulatory updates the details were not final as of September 2026 and the rules are still evolving. Check current eligibility with your installer, at KfW or with us before planning 2027 projects around them.

The arithmetic of degression is simple: a household eligible for the full 70% today loses four percentage points of climate-speed bonus as early as February 2027, and the cost ceiling keeps falling underneath. In a degressive scheme, the earliest complete application wins. For the wider European picture, compare France's MaPrimeRénov' and Italy's Conto Termico 3.0.