Comparison Guide · 2026-07-03
Mortgage Guarantee Scheme vs Shared Ownership UK 2026
A 95% mortgage guarantee mortgage lets you buy 100% of a property with just a 5% deposit, with the government guaranteeing part of the loan to the lender to make high-LTV lending viable. Shared Ownership lets you buy a smaller share (typically 10%–75%) of a property and pay subsidised rent on the rest, needing a much smaller deposit relative to the full property value, but leaving you a part-owner rather than outright owner from day one.
At a Glance
| Feature | Mortgage Guarantee Scheme (95% LTV) | Shared Ownership |
|---|---|---|
| Deposit needed | 5% of full property price | 5%–10% of your share only (often a few thousand pounds) |
| What you own | 100% of the property from day one | Your purchased share only (e.g. 25%–75%) |
| Monthly outgoings | Mortgage payment on 95% of full value | Mortgage on your share + subsidised rent on the rest (rent capped around 3% of unsold share) |
| Ability to increase ownership | N/A — you already own 100% | Yes — "staircasing" lets you buy further shares over time, up to 100% on most schemes |
| Property type restrictions | Any residential property up to typical lender limits | New-build or resale Shared Ownership homes from housing associations only |
| Selling the property | Sell freely on the open market | Housing association usually has first refusal; may restrict buyer pool |
| Interest rate | Standard rates, though slightly higher than lower-LTV deals | Standard rates on your share of the mortgage, similar to standard products |
When Mortgage Guarantee Scheme (95% LTV) Wins
- You can afford full mortgage repayments on 95% of the property value
- You want outright ownership and full control to sell, extend or alter the property
- You want to avoid ongoing rent payments to a housing association
When Shared Ownership Wins
- Your income cannot stretch to a 95% mortgage on a property that meets your needs
- You want a smaller deposit relative to full property value and plan to staircase to full ownership over time
- You are happy with new-build or ex-Shared-Ownership stock and the resale restrictions that come with it
Frequently Asked Questions
What deposit do I need for the mortgage guarantee scheme?
You need a minimum 5% deposit of the full purchase price, with the mortgage guarantee covering lenders against losses on the top slice of the loan (95% loan-to-value), which is what makes lenders willing to offer these otherwise higher-risk mortgages at competitive rates.
Is Shared Ownership cheaper than a 95% mortgage overall?
It depends on local rents and the specific property, but Shared Ownership usually has lower monthly costs upfront because you are only mortgaging your share, even after adding the subsidised rent. Over the long term, if you staircase to 100% ownership, total costs can converge with or exceed a standard mortgage due to rent paid along the way plus staircasing valuation and legal fees each time you buy more shares.
Can I sell a Shared Ownership property whenever I want?
Yes, but the housing association usually has a "nomination period" (commonly 4–8 weeks) during which they can try to find a buyer for your share themselves before you can market it independently, and any buyer generally also needs to meet Shared Ownership eligibility criteria, which restricts your buyer pool compared to a standard freehold or leasehold sale.
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What happens to my mortgage guarantee scheme rate after the initial fixed period?
Like any mortgage, you will move to the lender's standard variable rate (SVR) or need to remortgage once your initial fixed or tracker period ends. As your loan-to-value falls over time (through repayment and/or house price growth), you should be able to remortgage onto cheaper rates as you become eligible for better LTV bands.
Do I pay full stamp duty on a Shared Ownership purchase?
You can choose to pay Stamp Duty Land Tax on just the share you are buying, or elect to pay it upfront on the full market value (useful if you plan to staircase quickly, since the total tax can be lower). First-time buyer relief may apply to reduce or eliminate the charge depending on the property value and your buyer status.
Key Sources
Related Comparisons
Shared Ownership vs 100% Mortgage,Help to Buy vs Shared Ownership
Calculators for this comparison
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Disclaimer: This comparison is general information, not personal financial advice. Figures reflect the 2026/27 UK tax year and can change. Always check current HMRC/gov.uk guidance or speak to a regulated adviser before making a decision.