How to save for a house deposit
Build a home-buying target, include costs beyond the deposit and calculate the monthly amount needed by your expected purchase date.
In this guide
A home-buying target is more than the deposit. Legal work, surveys, moving and the first costs of the property all need a place in the plan.
Start with a realistic property-price range and an editable deposit assumption rather than treating one percentage as right for everyone. The mortgage available to you, lender criteria and your wider finances will shape the final target.
This guide helps you build the target, calculate the monthly contribution, understand current Lifetime ISA rules and choose where to keep the money while you save.
Key terms used in this guide6 terms
Definition
Deposit
The part of the property price paid from your own funds rather than the mortgage.
Planning your purchase
A house-deposit goal starts with three moving parts: the property price you are planning around, the deposit you want to provide and the other cash costs that come with buying. Change any one of them and the target changes.
A larger deposit can reduce the mortgage needed and may give access to different products, but it is not the only test of affordability. Lenders also consider income, commitments, credit history and their own criteria.
Keep the target grounded in your likely search area and circumstances. Review it as local prices, your mortgage options or the date of the purchase change.
Deposit calculator
Use this calculator to estimate the deposit from a property-price assumption, add the current property tax for your location and buyer circumstances, then include an allowance for legal work, surveys, moving and other buying costs. It does not estimate how much a lender will offer.
Change the property price, location, buyer details, deposit percentage and other-cost allowance to fit your plan.
House purchase calculator
Home-buying target
Funding
Set a savings timeline
The target becomes practical when you connect the amount with either a date or a regular contribution. Use your existing savings and any confirmed gifted contribution, then choose the question you need the calculator to answer.
Calculate the monthly contribution needed for a chosen deadline, or enter a contribution you can afford to estimate how long the target could take. If the result is not realistic, revisit the date, property-price assumption, costs or deposit level rather than forcing the budget.
Choose what to calculate
Monthly contribution calculator
Goal and deadline
Starting point and rate
Other buying costs
Using the whole fund as the deposit can leave the purchase short elsewhere. Build the other costs into the target from the beginning, then replace these broad planning allowances with quotes as the purchase gets closer.
| Cost | Estimated cost | What to plan |
|---|---|---|
| Legal work | Estimated cost£0 to £2,500Conveyancing and searches | What to plan Paid during the purchase. A mortgage deal may include standard legal work, cashback or a contribution towards the cost. Check whether searches, leasehold supplements and work outside the standard service are covered. |
| Valuation and survey | Estimated cost£0 to £1,500A basic valuation may be included | What to plan A lender may include its valuation with the mortgage, but this is for the lender and is not an independent survey. Choose and budget for the survey the property needs before exchange. |
| Mortgage fees | Estimated cost£0 to £2,500+Booking, product and account fees | What to plan Some deals have no product fee or offer cashback. A fee added to the mortgage attracts interest, so compare the total cost of each deal rather than only the interest rate. |
| Property tax | Estimated cost£0 to £20,000+Use the calculator above | What to plan Usually due at completion. The amount depends on the property price, location and buyer status. |
| Moving and setup | Estimated cost£500 to £3,000Removals, storage and essentials | What to plan Usually paid around completion. Include only the immediate costs needed to move in safely. |
| Emergency buffer | Estimated cost£2,000 to £5,000+Keep it separate | What to plan Keep this available after completion rather than assuming every repair or household cost can wait. |
Choose where to keep the deposit
A house deposit may be saved over years, but the final purchase date can move quickly once an offer is accepted. Match each part of the fund to the certainty of the date.
Cash Lifetime ISA
At purchaseBest for an eligible first-time buyer whose property price and timing fit the current Lifetime ISA rules.
Watch out: The annual contribution cap, 12-month rule, property-price limit and withdrawal charge all matter.
Easy access
Any timeBest for money needed for near-term exchange, completion or other buying costs.
Watch out: The AER can change and bonus periods may end.
Fixed term
At end of termBest for the part of a deposit that will not be needed before a known future date.
Watch out: A purchase can move earlier than expected and access may be unavailable.
As the expected purchase approaches, consider moving money needed soon into an account with reliable access. A slightly higher rate is not useful if the deposit cannot be released when your conveyancer needs it.
Build the deposit steadily
A large target is usually built through consistent contributions, periodic reviews and careful use of one-off money.
Automate your saving
Set up the monthly contribution just after payday so it becomes part of the regular household budget.
Redirect extra money
Put suitable bonuses, refunds and windfalls into the deposit, and move genuine savings from recurring spending into the fund.
Keep the goal organised
Keep individual and joint contributions visible, with separate pots for the deposit, buying costs and post-completion buffer.
Review the property-price assumption and monthly contribution periodically. Progress can improve because income rises or costs fall, but the target can also move if prices, mortgage options or buying plans change.
Are you eligible for a Lifetime ISA?
A Lifetime ISA can add a government bonus to eligible first-home savings, but you must qualify both when opening the account and when using it to buy. Check each rule before relying on the money for your deposit.
Aged 18 to 39 to open
You must make your first payment before turning 40. Once the account is open, you can normally continue contributing until age 50.
UK resident or qualifying Crown servant
You must normally be resident in the UK. Different rules allow certain Crown servants serving overseas, and their spouses or civil partners, to qualify.
Save up to £4,000 and receive a 25% bonus
The £4,000 annual limit applies across all Lifetime ISAs you hold and counts towards your overall ISA allowance. The government bonus is up to £1,000 each tax year.
You must be a first-time buyer
To make a charge-free withdrawal for a home, you must be buying your first residential property. Each Lifetime ISA holder using their savings must qualify individually.
Home worth £450,000 or less
The property must cost no more than £450,000, be bought with a mortgage and be intended as your main residence. The same £450,000 cap applies across the UK, including London.
12 months since your first payment
Your first payment must have been made at least 12 months before the money can be used for a qualifying home purchase.
Use a solicitor or conveyancer
Your provider pays the money directly to the solicitor or licensed conveyancer handling the purchase, which is normally expected to complete within 90 days of withdrawal. Follow the provider's process rather than withdrawing the money yourself.
A 25% withdrawal charge normally applies when money is taken for a reason that does not qualify. Read the current withdrawal rules before moving or withdrawing the deposit.
The government has also consulted on a possible replacement first-time-buyer ISA. That proposal does not replace the current rules unless and until policy and legislation change; see the consultation for context.
Avoid common pitfalls
Saving the target is only one part of being ready to buy. Avoid plans that depend on every assumption going right at the same time.
Avoid these mistakes:
Forgetting the other buying costs
Do not forget legal, survey, moving and initial-home costs.
Locking away money needed soon
Do not lock away money that may be needed before the term ends.
Using a Lifetime ISA without checking the rules
Do not use a Lifetime ISA without checking the current qualifying rules.
Ignoring future affordability
Check how the future mortgage payment and household bills fit the budget.
Treating the plan as fixed
Allow the target and date to change when the evidence changes.
Accounts for a house deposit
Compare accounts according to the job each part of the fund needs to do. A Cash Lifetime ISA may add a government bonus for an eligible first-home purchase, while regular and easy-access accounts can hold contributions or costs outside its annual limit.
Compare current examples, then check the Lifetime ISA rules, access, deposit limits and eligibility before applying.
The bottom line
A house-deposit plan needs a realistic property assumption, enough cash for the wider purchase and a monthly contribution you can sustain.
Plan for the purchase, not only the deposit. Keep the target, mortgage affordability, account access and emergency buffer under review as the expected buying date gets closer.
