Buying your first home can feel like a chain of unfamiliar decisions: how much to save, what a lender might offer, which mortgage deal to choose and when to instruct a solicitor. A first time buyer mortgage UK application is not a separate legal type of mortgage, but first-time buyers often have access to low-deposit products and government-backed options. Treat the mortgage, deposit and buying costs as one connected budget rather than focusing only on the headline rate.
How first-time buyer mortgages work
A mortgage is a loan secured against the property you buy. You provide a deposit and borrow the rest. If you buy a £250,000 home with a £25,000 deposit, for example, you need a £225,000 mortgage. That is a 90% loan-to-value, or LTV, mortgage.
First-time buyers commonly look at 90% or 95% LTV deals. Buyers will usually need at least a 5% to 10% deposit, while a larger deposit can open up more products and potentially lower rates. The permanent Mortgage Guarantee Scheme, introduced in July 2025, supports the continued availability of 91% to 95% LTV mortgages through participating lenders. It does not guarantee an individual application will be approved.
How much can you realistically borrow?
FTB mortgage criteria normally include income, regular spending, existing debts, credit commitments, dependants, employment circumstances, the size and source of your deposit, and the property itself. Lenders must assess whether repayments are affordable, so two buyers on the same salary can receive different borrowing limits.
Before viewing homes, build a monthly budget that includes the future mortgage payment alongside Council Tax or domestic rates, utilities, insurance, service charges where relevant, travel, food and maintenance. Buying first home UK property is much less stressful when your chosen price leaves breathing room after completion.
Your deposit is only part of the cash you need
A common mistake is saving exactly enough for the deposit and forgetting the rest of the transaction. You may also need money for conveyancing, searches, a survey, mortgage or product fees, moving costs, insurance and property tax where applicable. Some mortgage fees can be added to the loan, but doing so means paying interest on them.
Keep these costs separate from your deposit. If using gifted deposit money, tell the lender and conveyancer early because they will normally need evidence of where the funds came from. A clear paper trail for your savings can also make the application smoother.
What affects first time buyer mortgage rates?
First time buyer mortgage rates can change frequently and vary by lender, deposit size, LTV, fixed period, product fee, credit profile and wider market conditions. The lowest advertised rate is not automatically the cheapest deal. A slightly higher rate with a lower product fee can sometimes cost less over the initial deal period.
Compare the rate, monthly payment, product fee, early repayment charges and incentives together. A regulated mortgage adviser can be useful if you have a small deposit, variable income, self-employment or another situation that narrows your lender options.
The application timeline from budget to keys
Get a mortgage in principle
A mortgage in principle, also called an agreement or decision in principle, is an estimate of what a lender may be prepared to lend based on initial information and sometimes a credit check. It is not a formal mortgage offer, but it can help set your property budget before you make an offer.
Make an offer and submit the full application
After your offer on a property is accepted, you can submit the full mortgage application. Expect to provide identification, proof of income, bank statements, evidence of the deposit and details of your outgoings. The lender will also assess the property and normally arrange a valuation to confirm it is suitable security for the loan.
Complete the legal work and survey
Your solicitor or licensed conveyancer handles searches, title checks, contracts and the transfer of funds. The lender’s valuation is primarily for the lender and is not the same as your own survey. Depending on the age and condition of the home, an appropriate survey can uncover defects that may affect your budget or decision to proceed.
Receive the offer and complete
If the lender is satisfied with you and the property, it issues a formal mortgage offer. Your conveyancer then guides you through the remaining legal steps. The process and terminology differ between parts of the UK, particularly Scotland, so use advice relevant to where you are buying.
First-time buyer tax relief and location differences
Home-buying taxes are not uniform across the UK. In England and Northern Ireland, eligible first-time buyers purchasing a main residence for £500,000 or less can claim Stamp Duty Land Tax relief: 0% on the first £300,000 and 5% on the portion from £300,000 to £500,000. If the price is above £500,000, the relief is not available. Where there is more than one purchaser, each buyer must meet the first-time-buyer conditions.
Scotland uses Land and Buildings Transaction Tax, while Wales uses Land Transaction Tax, with different rules. Check the system for the nation where the property is located rather than assuming an English tax example applies everywhere.
Three checks before you apply
Review your credit reports and correct genuine errors before making multiple applications. Avoid taking on unnecessary new credit immediately before applying, because extra monthly commitments can reduce affordability. Also keep your deposit, purchase fees and emergency savings as separate amounts so the move does not consume every pound you have.
A useful stress test is to calculate your budget using a monthly mortgage payment higher than the quote you currently expect. If that would make normal expenses uncomfortable, consider a lower property price or larger deposit rather than stretching to the maximum borrowing figure.
Frequently asked questions
How much deposit does a first-time buyer need in the UK?
Many first-time buyers aim for at least 5% to 10% of the property price. Some 95% LTV mortgages are available, while a larger deposit can improve the choice of deals and may reduce the rate.
Is a mortgage in principle a guaranteed mortgage offer?
No. It is an early indication of what a lender might lend. A full application still requires affordability checks, supporting documents and an acceptable property valuation.
Can a first-time buyer get a mortgage with a small deposit?
Yes, subject to lender criteria. The permanent Mortgage Guarantee Scheme supports participating lenders offering high-LTV mortgages, but applicants still need to pass normal affordability and credit checks.
Should I choose the mortgage with the lowest interest rate?
Not automatically. Compare product fees, incentives, early repayment charges, monthly payments and the cost over the period you expect to keep the deal.
Moving from saving to buying with confidence
Your first mortgage becomes easier to manage when you work backwards from an affordable monthly budget, not forwards from the maximum loan available. Build a deposit, allow separately for purchase costs, get a realistic mortgage in principle and compare deals on total cost rather than rate alone. With the financial, legal and property checks moving together, you can approach your first purchase with a clearer budget and fewer last-minute surprises.