Help to Buy vs Shared Ownership: Which Costs Less?

Welcome to CalZone's ultimate UK guide on Help to Buy vs Shared Ownership: Which Costs Less?. Designed and compiled by Sulzax_Dev, this comprehensive guide breaks down verified UK rules, official statistics, and practical strategies to help you navigate your decisions smoothly.

Help to Buy vs Shared Ownership: Which Costs Less?

If you're trying to get on the property ladder without a huge deposit, you've probably come across both Help to Buy and Shared Ownership. They're often mentioned in the same breath, but they work in very different ways — and one important update first: the Help to Buy Equity Loan scheme closed to new applications in England back in October 2022, with the scheme fully wound down by March 2023. It isn't dead everywhere, though — Help to Buy Wales is still running and is currently set to continue until September 2026.

So for most first-time buyers today, this comparison is really about understanding how Help to Buy worked (or still works in Wales) versus how Shared Ownership works now, so you can judge which route would have cost less, or which alternative scheme suits you better. In this Calzone guide, we'll break down the real costs of each, including deposits, monthly payments, and the long-term expense of staircasing.

Quick Answer: Which Costs Less?

In the short term, Shared Ownership is usually the cheaper way to get a foot on the ladder because your deposit and mortgage are based only on the share you're buying, not the full property value. However, Shared Ownership comes with ongoing rent and service charges on top of your mortgage, which Help to Buy properties didn't have. Over a longer period, research cited by housing providers has found that costs for a 50% Shared Ownership purchase are broadly in line with Help to Buy, while a 25% share works out cheaper still — but the gap narrows or reverses over time as rent increases and staircasing costs rise with property values.

In short: Shared Ownership tends to cost less upfront, but Help to Buy (where available) can cost less over 10+ years if you don't need to staircase.

How Help to Buy Worked

The Help to Buy Equity Loan scheme was a government-backed loan that covered up to 20% of the cost of a new-build home (up to 40% in London), interest-free for the first five years. Buyers needed just a 5% deposit and a mortgage for the remaining 75-80% of the property.

Deposit: 5% of the full property price

Mortgage: 75-80% of the property price

Government loan: 20% (40% in London), interest-free for 5 years, then interest charged from year 6

No rent — you owned 100% of the equity in the home, just with a loan secured against a portion of it

Because there was no ongoing rent, monthly costs on a Help to Buy property were often lower than an equivalent Shared Ownership arrangement once the interest-free period was taken into account — but buyers eventually had to repay the equity loan, either in stages or when they sold, based on the property's market value at the time of repayment. If the property had risen significantly in value, that repayment could be far more than the amount originally borrowed.

Since the scheme closed in England, Help to Buy Wales remains the only active version, following broadly the same structure. If you're buying in Wales, it's worth checking the Help to Buy Wales scheme directly for current eligibility and property price caps.

How Shared Ownership Works

Shared Ownership lets you buy a portion of a property — typically between 10% and 75% of its market value — and pay subsidised rent to a housing association on the remaining share you don't own.

Deposit: Usually 5-10% of the value of the share you're buying, not the full property price

Mortgage: Covers the remaining cost of your share

Rent: Paid monthly on the portion you don't own, typically at a lower rate than market rent

Service charges: Often payable on top, especially for leasehold flats

Staircasing: You can buy additional shares over time, increasing your ownership and reducing your rent

To be eligible for Shared Ownership in 2026, your household income generally must not exceed £80,000 a year outside London, or £90,000 a year in London, and you typically need to be a first-time buyer, previous homeowner unable to afford one now, or an existing shared owner looking to move.

A Worked Cost Example

Let's compare a £300,000 property to see how the numbers might have looked under each scheme:

Help to Buy (20% equity loan, England, while available):

Deposit (5%): £15,000

Mortgage (75%): £225,000

Government equity loan (20%): £60,000 (interest-free for 5 years)

Monthly cost: Mortgage repayments only, no rent, until year 6 when equity loan interest kicks in

Shared Ownership (40% share purchased):

Share value: £120,000

Deposit (5% of share): £6,000

Mortgage (95% of share): £114,000

Monthly cost: Smaller mortgage repayments, plus rent on the remaining 60% (£180,000), typically charged at around 2.75% of that value annually — roughly £412 a month — plus service charges

In this example, Shared Ownership needs a dramatically smaller deposit (£6,000 vs £15,000) and a smaller mortgage, but the added rent means monthly outgoings can end up similar to, or even higher than, a Help to Buy mortgage once you include rent and service charges. This is exactly why the answer to "which costs less" depends heavily on the share size you choose and how long you plan to stay. You can run your own numbers using our Shared Ownership calculator and our mortgage affordability calculator.

The Long-Term Cost: Staircasing vs Equity Loan Repayment

This is where the real cost difference tends to show up.

Shared Ownership staircasing: Each additional share you buy is purchased at the property's current market value, not the price you originally paid. If you bought a 50% share of a £300,000 home and staircase to 100% fifteen years later when the property is worth £500,000, the remaining 50% would cost £250,000 — far more than half of the original £300,000 price. Rising property values make staircasing progressively more expensive the longer you wait.

Help to Buy equity loan repayment: The government's loan is also repaid based on the property's market value at the time you repay it, not the amount you originally borrowed. So a 20% equity loan on a home that's doubled in value effectively costs you 20% of the new, higher value — a similar dynamic to staircasing, just structured as a single repayment rather than gradual share purchases.

In both cases, rising house prices work against buyers who delay increasing their ownership share or repaying their loan. Neither scheme is automatically "cheaper" here — it depends on how quickly local property values rise and how long you hold the property before staircasing or repaying.

Ongoing Costs to Compare

Cost

Help to Buy

Shared Ownership

Deposit

5% of full property price

5-10% of share value only

Mortgage size

75-80% of full price

Based on share purchased

Monthly rent

None

Yes, on unowned share

Service charges

Sometimes (leasehold flats)

Common, especially on new builds

Equity loan interest

From year 6 onwards

Not applicable

Staircasing costs

Not applicable

Market value at time of purchase

Ownership type

Freehold or leasehold

Leasehold

Which Scheme Suits You Better?

Choose (or look for alternatives to) Help to Buy-style routes if you can manage a full 5% deposit on the whole property, want to avoid paying rent alongside a mortgage, and don't want a housing association involved in future sales.

Choose Shared Ownership if your deposit savings are limited, you want the lowest possible entry cost, and you're comfortable with paying rent and potentially service charges while gradually staircasing to full ownership over time.

Since Help to Buy has closed in England, most first-time buyers today are choosing between Shared Ownership and newer schemes like First Homes, which offers new-build homes at a discount of 30-50% below market value with no ongoing rent. It's worth comparing all your options — our guide to the First Homes scheme breaks down how it stacks up against Shared Ownership for buyers in 2026.

Other Costs to Factor In

Regardless of which scheme you're considering, remember to budget for:

Stamp Duty — first-time buyer relief may reduce or remove this cost depending on the property price; see our Stamp Duty guide for current thresholds.

Solicitor and conveyancing fees

Mortgage arrangement fees

Survey costs

Ground rent, if applicable, on leasehold properties

If you're also weighing up property type, our guide on buying a flat vs a house in the UK covers how leasehold charges and service costs differ between the two, which is especially relevant for Shared Ownership buyers since most Shared Ownership properties are flats.

Frequently Asked Questions

Is Help to Buy still available in the UK? The Help to Buy Equity Loan scheme closed to new applications in England in October 2022 and fully ended by March 2023. Help to Buy Wales continues separately and is currently running until September 2026.

Is Shared Ownership cheaper than Help to Buy? Shared Ownership usually needs a smaller deposit since it's based only on the share purchased, but you also pay ongoing rent and service charges on top of your mortgage. Help to Buy required a full mortgage on 75-80% of the property with no additional rent, so total monthly costs can end up similar depending on the property's value and the share size chosen.

What is staircasing in Shared Ownership? Staircasing is the process of buying additional shares in a Shared Ownership property over time, increasing your ownership stake and reducing the rent you pay on the remaining share. Each additional share is bought at current market value, which can make staircasing more expensive if property prices have risen.

What income do I need for Shared Ownership? In 2026, your household income generally must not exceed £80,000 a year outside London, or £90,000 a year in London, to qualify.

Final Thoughts

There's no single answer to which scheme costs less — it depends on the share size, local property price growth, and how long you plan to stay in the home. Shared Ownership tends to win on upfront affordability, while Help to Buy (where it was, and still is in Wales) tended to keep monthly costs lower by avoiding rent altogether. Since Help to Buy has closed in England, most buyers today will be comparing Shared Ownership directly against newer schemes like First Homes rather than Help to Buy itself. Whichever route you're considering, run the real numbers for your situation using our Shared Ownership calculator and check the latest eligibility criteria on GOV.UK's Shared Ownership page or the GOV.UK affordable home ownership schemes overview before you commit.