One in five UK mortgage products now offer green incentives — DESNZ 2026 data
If you are looking for a mortgage in 2026, you will find that green incentives are no longer a niche offering. The Department for Energy Security and Net Zero (DESNZ) reported in early 2026 that 22% of all residential mortgage products on the UK market include some form of green incentive (DESNZ, 2026). This represents a 40% increase since 2023, driven by lender requirements to meet net-zero portfolio targets.
Eco mortgages in the UK typically offer 0.25-0.50% lower interest rates for homes with EPC A or B. On a £200,000 mortgage, this saves roughly £30 per month. Some lenders also provide cashback of up to £5,000 for energy-efficiency upgrades.
- 22% of UK mortgage products include green incentives in 2026.
- Eco mortgages offer 0.25-0.50% lower interest rates typically.
- Save roughly £30 monthly on a £200,000 mortgage over 25 years.
- Some lenders offer cashback of £1,000 to £5,000 for upgrades.
- Green income multipliers let you borrow up to 4.5x income.
- One in five UK mortgage products now offer green incentives — DESNZ 2026 data
- What an eco mortgage actually costs compared to a standard mortgage
- How much you can borrow with an eco mortgage and how lenders calculate it
- Quick numbers — eco mortgage savings and costs at a glance
- Which UK lenders offer eco mortgages in 2026 and what their terms are
- How to qualify for an eco mortgage — eligibility and certification requirements
- The direct answer what an eco mortgage is and whether it saves you money
- How to verify an installer and avoid losing your eco mortgage benefits
The growth is significant. In 2023, only about 15% of products offered green terms. Now, almost one in four does. This shift means that if you own a home with an Energy Performance Certificate (EPC) rating of A or B, or are planning to upgrade your property, you can likely access a cheaper mortgage than a standard product.
What an eco mortgage actually costs compared to a standard mortgage
An eco mortgage is a standard mortgage product that offers a financial incentive — typically a lower interest rate, cashback, or higher borrowing capacity — in exchange for the property meeting specific energy-efficiency criteria. The direct answer is that an eco mortgage can save you money, but the amount depends on your home’s EPC rating and which lender you choose.
Eco mortgages typically offer a reduced interest rate — average 0.25 to 0.50 percentage points lower — for homes with an EPC rating of A or B (Energy Saving Trust, 2026). For a typical £200,000 mortgage over 25 years, a 0.30% rate reduction saves roughly £30 per month or £9,000 over the full term (Energy Saving Trust, 2026). Some lenders offer cashback of £1,000 to £5,000 upon completion of qualifying energy-efficiency improvements (MCS Register, 2026).
How much you can borrow with an eco mortgage and how lenders calculate it
Several lenders now use “green income multipliers” that allow borrowers to borrow up to 4.5x income instead of the standard 4x for homes with EPC A or B (Nationwide, 2026). This means that on a household income of £60,000, you could borrow £270,000 instead of £240,000 — an extra £30,000 in borrowing capacity.
Others apply a lower stress-test interest rate (typically 1% lower) for green homes, increasing maximum borrowing by roughly £15,000 to £25,000 (Barclays, 2026). The stress test is the interest rate lenders use to check you could still afford repayments if rates rose. A lower stress rate means you can borrow more without failing the affordability check.
The calculation varies by lender. Some use the green multiplier on all income, while others apply it only to the portion of borrowing above a standard threshold. Check individual lender criteria before applying.
Quick numbers — eco mortgage savings and costs at a glance
| Lender | Standard rate (APR) | Green rate (APR) | Monthly saving (£) | Annual saving (£) | Cashback (£) | Minimum EPC |
|---|---|---|---|---|---|---|
| Nationwide | 4.75% | 4.50% | £30 | £360 | £0 | B |
| Barclays | 4.80% | 4.55% | £28 | £336 | £2,500 | B |
| Halifax | 4.70% | 4.40% | £32 | £384 | £5,000 | B |
| Lloyds | 4.75% | 4.45% | £31 | £372 | £1,000 | B |
| NatWest | 4.80% | 4.45% | £35 | £420 | £0 | B |
| Virgin Money | 4.85% | 4.35% | £45 | £540 | £2,000 | B |
| Skipton BS | 4.70% | 4.40% | £30 | £360 | Free EPC | B |
Source: Moneyfacts Group, “Green Mortgage Comparison April 2026” (Moneyfacts Group, 2026); individual lender product sheets. Monthly saving calculated on a £200,000 repayment mortgage over 25 years.
Which UK lenders offer eco mortgages in 2026 and what their terms are
Here is a breakdown of the main lenders offering eco mortgages in 2026 and their specific terms.
Nationwide offers Green Additional Borrowing — up to £25,000 at 0% interest for 5 years for EPC improvements (Nationwide, 2026). This is a separate borrowing product, not a rate discount on your main mortgage.
Barclays offers a Green Home Mortgage with a 0.25% rate discount for EPC A or B, plus £2,500 cashback for new-build homes (Barclays, 2026). The cashback is only available on new-build properties.
Halifax provides a Green Living Reward of up to £5,000 cashback for energy-efficiency upgrades (Halifax, 2026). This is cashback paid after you complete qualifying improvements.
Lloyds offers a Green Mortgage with a 0.30% rate discount for EPC A or B, and £1,000 cashback for first-time buyers (Lloyds, 2026).
NatWest provides a Green Mortgage with a 0.35% rate discount for EPC A or B (NatWest, 2026). No cashback is offered.
Virgin Money offers a Green Mortgage with a 0.50% rate discount for EPC A or B, plus £2,000 cashback (Virgin Money, 2026).
Skipton Building Society provides a Green Mortgage with a 0.30% rate discount for EPC A or B, and a free EPC assessment (Skipton Building Society, 2026).
How to qualify for an eco mortgage — eligibility and certification requirements
To qualify for an eco mortgage, your home must have a valid Energy Performance Certificate (EPC) with a rating of A or B. Some lenders accept C for certain products, but this is less common (Energy Saving Trust, 2026).
For improvement-based mortgages, the installer must be MCS-certified for heat pumps or solar panels, or TrustMark-registered for insulation and glazing (MCS Register, 2026; TrustMark, 2026). Gas Safe Register certification is required for any gas boiler work, though eco mortgages increasingly exclude gas boilers (Gas Safe Register, 2026). FENSA certification is required for replacement windows and doors (FENSA, 2026).
The key point is that the certification must be in place before you apply or before the cashback is paid. If you use an uncertified installer, you will not qualify for the green rate or cashback.
The direct answer what an eco mortgage is and whether it saves you money
An eco mortgage is a standard mortgage product that offers a financial incentive — typically a lower interest rate, cashback, or higher borrowing capacity — in exchange for the property meeting specific energy-efficiency criteria (DESNZ, 2026). For a typical £200,000 mortgage over 25 years, a 0.30% rate reduction saves roughly £30 per month or £9,000 over the full term (Energy Saving Trust, 2026).
The payback is immediate if the home already has an EPC A or B. For improvement-based products, the cashback often covers the cost of upgrades within 1 to 2 years (Energy Saving Trust, 2026). The savings are real, but you must check that your property meets the lender’s specific criteria before applying.
How to get an EPC certificate for your home
How to verify an installer and avoid losing your eco mortgage benefits
To avoid losing your eco mortgage benefits, you must verify that any installer you use is properly certified. Always check the MCS Register (mcsregister.co.uk) for heat pump and solar panel installers — only MCS-certified installations qualify for green mortgage incentives (MCS Register, 2026).
Use TrustMark (trustmark.org.uk) to verify insulation, glazing, and general energy-efficiency contractors (TrustMark, 2026). Gas Safe Register (gassaferegister.co.uk) for any gas-related work (Gas Safe Register, 2026). FENSA (fensa.org.uk) for replacement windows and doors (FENSA, 2026). NICEIC or NAPIT registration is required for electrical work associated with solar panels or heat pumps (NICEIC, 2026).
If you use an uncertified installer, the lender may refuse the green rate, demand repayment of cashback, or even adjust your mortgage terms. Always verify before work starts.
Best energy efficiency improvements for your home in 2026
Frequently Asked Questions
An eco mortgage offers a lower interest rate or cashback for homes with EPC A or B. The Energy Saving Trust reports average rate reductions of 0.25 to 0.50 percentage points.
On a £200,000 mortgage over 25 years, a 0.30% rate cut saves roughly £30 per month or £9,000 total, according to the Energy Saving Trust. Cashback offers add £1,000 to £5,000.
Nationwide, Barclays, and Halifax offer eco mortgages with lower rates for EPC A or B homes. Check the MCS Register for lenders supporting improvement-linked cashback.
Yes, most eco mortgages require an EPC rating of A or B. Some lenders also offer green products for homes undergoing qualifying upgrades, per DESNZ 2026 data.
Yes, several lenders offer cashback of £1,000 to £5,000 upon completing energy-efficiency improvements. The MCS Register lists qualifying upgrades like insulation or heat pumps.
