SIPP Mortgage Interest Rates: What to Expect in 2026

SIPP mortgage rates as at early 2026 typically range from 5.5% to 8.5% per annum, depending on the lender, property type, loan-to-value ratio, loan size, and the strength of the tenancy. This range reflects the specialist nature of the product — SIPP mortgages sit within the commercial mortgage market, not the residential market, and pricing reflects commercial rather than residential dynamics.

To put this in context: mainstream commercial property mortgages for well-let, standard property types from high-street banks currently price in the 5.5%–7.5% range. SIPP-specific products add a small premium for the administrative complexity of lending to a pension scheme, but the gap has narrowed considerably as the market has matured and competition has increased.

Variable rate products (typically linked to SONIA or bank base rate) are available from some lenders and will generally start lower than equivalent fixed rate products, though they carry interest rate risk. For a comparison of fixed versus variable approaches, see our guide on fixed vs variable SIPP mortgages.

The rate you are offered will be influenced by several property and transaction-specific factors:

• Loan-to-value (LTV) — lower LTV deals attract better rates. A 50% LTV transaction will price better than a 70% LTV transaction with the same lender
• Property type — industrial and office premises with strong covenants typically attract the best rates; leisure, hospitality, and specialist properties attract higher rates to reflect illiquidity risk
• Tenancy quality — a long lease to a strong covenant tenant is far more attractive to lenders than a short lease or a vacant property
• Loan size — larger loans (generally above £500,000) often attract lower margins due to economies of scale for the lender
• SIPP fund size — a well-funded SIPP with significant headroom over the 50% LTV limit reduces lender risk and can improve pricing
• Connected party tenancy — where the SIPP member's business is the tenant, some lenders apply a pricing premium to reflect the conflict of interest risk

The most effective way to secure the best available rate is to work with a specialist broker who has genuine relationships with the active lenders in this market. Rates are not always publicly advertised, and the difference between a transactional approach (direct to one lender) and a properly brokered process (comparing multiple lenders' actual offers) can be 0.5–1.5% per annum — which on a £300,000 mortgage represents £1,500–£4,500 per year in additional cost.

Beyond broker selection, steps you can take to improve your rate include:

• Presenting a strong tenancy — market rent, long lease term, financially robust tenant
• Maximising SIPP fund value before drawdown to reduce effective LTV
• Ensuring the property is well-maintained and recently valued
• Having clean documentation — updated SIPP accounts, clear beneficial ownership structure

Our SIPP Mortgage Calculator allows you to model the effect of different rates on your monthly mortgage cost and overall return.

When comparing SIPP mortgage products, the interest rate is important but not the only variable. A lower headline rate can be offset by higher arrangement fees, shorter terms requiring earlier refinancing, or restrictive covenants that limit flexibility. Total cost of borrowing — rate plus fees amortised over the loan term — is the correct basis for comparison.

Our guide on SIPP mortgage fees breaks down every cost element to ensure you are making a fully informed comparison. Our team will always provide a total cost illustration alongside rate comparisons when presenting options to clients.