Buying a rental property involves different mortgage checks from buying a home to live in. Lenders can place more weight on the expected rent, deposit, loan-to-value, property type and ownership structure. Your wider finances and landlord experience can also matter.
Whether you are buying your first rental, remortgaging an existing property or growing a portfolio, understanding these differences can help you plan the borrowing, deposit and wider costs more clearly.
What is a buy-to-let mortgage?
A buy-to-let mortgage lets you buy or remortgage a property you plan to rent to tenants. A standard residential mortgage is for a home you plan to live in, so the way lenders assess the borrowing is different.
The lender usually places more emphasis on the property’s expected rental income. It may also check your deposit, credit history, personal finances, landlord experience and the property itself.
How do buy-to-let mortgages work?
A buy-to-let lender checks whether the property and expected rent can support the mortgage. It can also consider your finances, experience and ownership route.
RENT
Check the rent supports the mortgage
The lender may use a rental coverage calculation or stress test to check whether the expected rent is strong enough.
DEPOSIT
Work out the loan-to-value
Your deposit sets the loan-to-value, which can affect the amount available, lender choice and mortgage products.
PROPERTY
Make sure the property fits
Condition, construction, tenure and intended rental use can all affect whether a lender accepts the property.
OWNERSHIP
Choose how you will own it
Buying personally or through a limited company can change the lenders, documents and criteria involved.
A valuer may give the lender their own rental assessment. If it is lower than you expected, the borrowing available can fall.
Interest-only or repayment buy-to-let mortgage?
Lenders may offer buy-to-let mortgages on an interest-only or repayment basis. The options available depend on the lender and product.
INTEREST-ONLY
The balance remains outstanding
Your monthly payment covers the mortgage interest but does not reduce the original balance.
You need a credible plan to repay the balance at the end of the term, such as selling, refinancing or using other funds.
REPAYMENT
The balance reduces over time
Your monthly payments cover interest and repay part of the mortgage balance.
Lender choice, monthly payments and product terms can differ from interest-only options.
How much buy-to-let deposit do you need?
The deposit you need varies by lender and property. The expected rent and your circumstances also matter. It also sets the loan-to-value, or LTV.
LTV shows the mortgage as a percentage of the property’s value. A lower LTV means you are borrowing a smaller proportion of the purchase price.
For example, if a property costs £250,000 and you borrow £187,500, the mortgage is 75% LTV and the deposit is £62,500.
Example
Amount
Property value
£250,000
Mortgage amount
£187,500
Deposit
£62,500
Loan-to-value
75%
A larger deposit may reduce the loan amount and widen your options. But keep enough cash for property tax, legal fees, repairs, insurance and periods without tenants. Use our buy-to-let stamp duty calculator to estimate the tax on your purchase in England or Northern Ireland.
First-time landlords also need to plan for buy-to-let costs. Allow for these before and after completion.
How much can you borrow for buy-to-let?
Expected rent plays a big part in how much you can borrow. Each lender applies its own rental calculation. Your deposit, finances, experience and the property can also matter.
A valuer may provide the lender with a market-rent figure. If it is lower than expected, the mortgage amount available can also fall.
Do the buy-to-let numbers work?
Test the borrowing, expected rent and potential yield before you commit.
Buy-to-let mortgage criteria and requirements
Buy-to-let mortgage criteria vary between lenders, and the way lenders assess landlords can differ by applicant, property and borrowing structure. Most applications still come back to a few core areas.
Expected rent
The lender may compare the expected rent with the mortgage using its own rental coverage calculation or stress test.
Deposit and loan-to-value
Your deposit sets the loan-to-value, which can affect the mortgage amount, lender choice and products available.
Your financial profile
Credit history, personal income, debts and existing property ownership can all affect which lenders fit.
Property suitability
The property must provide acceptable security and meet the lender’s rules on condition, construction, tenure and intended rental use.
Experience and ownership
Landlord experience and whether you apply personally or through a limited company can change the criteria and documents involved.
Some lenders accept first-time landlords, while others apply tighter criteria. Your options depend on the property, rent, deposit and circumstances.
Personal name or limited company?
You can apply for a buy-to-let mortgage personally or, in some cases, through a limited company. The two routes can involve different lenders, criteria and tax considerations.
PERSONAL OWNERSHIP
You own the property personally
The lender assesses you as the borrower, including the expected rent, deposit, loan-to-value, credit profile and finances.
This can involve less company administration, but tax and longer-term property plans still matter.
COMPANY OWNERSHIP
The company owns the property
Limited company applications involve extra checks. A lender may review the company, directors, shareholders, rent, deposit source and property. Some lenders may ask directors to provide personal guarantees.
This route brings company administration and different mortgage and tax considerations.
Compare the wider mortgage, tax and administration position before buying personally or through a limited company.
Types of buy-to-let mortgages
Buy-to-let is not one single mortgage route. The right option depends on your plans and the property. Your ownership structure and landlord experience can also shape what fits.
SPECIALIST PROPERTY
HMO and other specialist rentals
HMO mortgages and other specialist rentals can involve extra checks. Lenders may review licensing, layout, rental income, property condition and landlord experience.
Explore HMO mortgage options →
LET-TO-BUY
Rent out your current home
Let-to-buy is where you rent out your existing home while buying another property to live in. It involves two mortgage positions and can require careful affordability planning.
Explore let-to-buy mortgages →
REMORTGAGE
Review an existing rental mortgage
A buy-to-let remortgage can help you change lender or review your rate. You may also be able to release equity from an existing rental property.
Explore buy-to-let remortgage options →
PORTFOLIO LANDLORD
Borrowing across several rentals
Portfolio landlords may face a wider assessment. The lender can review rental income, mortgage balances and loan-to-values across the portfolio as well as the new mortgage.
Explore portfolio landlord mortgages →
HOLIDAY LET
Short-term holiday accommodation
Holiday let mortgages can use different rental calculations and property criteria from standard buy-to-let.
Explore holiday let mortgage →
How to get a buy-to-let mortgage
Start by checking the property, expected rent and borrowing, then compare buy-to-let mortgage options that fit your circumstances. The lender completes valuation and underwriting, while your solicitor handles the legal work.
01 · CHECK
Review the property and borrowing
Check the price, expected rent, deposit, loan-to-value, ownership route and likely lender criteria.
02 · COMPARE
Compare lender criteria and products
Compare the rate, fees, rental calculation, property rules, loan-to-value limits and applicant criteria.
03 · APPLY
Submit the mortgage application
The lender may request information about you, the property, deposit and ownership structure. Company and portfolio cases can need more documents.
04 · VALUE
Complete valuation and underwriting
The lender reviews the application and property. A valuer may assess both the property value and expected market rent.
05 · COMPLETE
Receive the offer and complete
If the lender is satisfied, it can issue an offer. Your solicitor then completes the legal work before the lender releases the funds.
Timescales vary, and missing documents, valuation issues or a specialist property can add time.
Costs and cash flow to plan for
A property may pass the lender’s checks but still leave little spare cash once you include wider costs.
Purchase costs
Property tax, legal work, surveys, mortgage fees and pre-letting work can increase the cash needed upfront.
Mortgage and rate changes
Payments can change when a deal ends or rates move, so test whether the property still works at a higher cost.
Repairs and management
Insurance, maintenance, repairs, agent fees, service charges and compliance costs can reduce the rent you keep.
Periods without rent
Mortgage and property costs continue during empty periods, so keep a realistic cash buffer.
Tax and ownership costs
Rental income and ownership can create tax and administration costs. Take appropriate tax advice before choosing a structure.
The real cost of buying a buy-to-let property goes beyond the deposit and monthly mortgage payment.
Is buy-to-let right for you?
Buy-to-let can suit people seeking rental income, long-term property exposure or a route to build a portfolio. It is not risk-free.
Buy-to-let returns can change over time. Property values can fall, rates can rise and tenants can leave. Repairs, tax changes and new regulations can also reduce your return.
Before you commit, check the rent, cash buffer, property and ownership structure against your longer-term plans.
WORTH KNOWING
Passing the lender’s rental test does not guarantee the investment will be profitable. Test the mortgage and the wider property costs separately.
New landlords can reduce avoidable problems by planning around common first-time landlord mistakes.
How Muttuo Mortgages can help
If you need buy-to-let mortgage advice, we can review the rent, deposit, property and ownership route before you apply.
Review the expected rent, deposit and loan-to-value
Compare buy-to-let mortgage options from more than 100 lenders
Check how the property, ownership route and applicant profile may affect lender choice
Speak to a buy-to-let mortgage broker
Compare mortgage routes for a new purchase, remortgage, limited company or growing rental portfolio.
Your property may be repossessed if you do not keep up with your mortgage repayments.
The Financial Conduct Authority does not regulate some buy-to-let mortgages.
Your buy-to-let mortgage questions answered
How much deposit do I need for a buy-to-let mortgage?
It depends on the lender, property, expected rent and your circumstances. Your deposit sets the loan-to-value and can affect the mortgage options available.
How much can I borrow on a buy-to-let mortgage?
Lenders usually assess the expected rent, mortgage amount, loan-to-value and property. Your finances, ownership structure and landlord experience can also matter.
Can I get a buy-to-let mortgage?
It may be possible if the property, rent, deposit and your wider profile meet a lender’s criteria. Each lender sets its own rules.
Can I get a buy-to-let mortgage as a first-time buyer or landlord?
Some lenders accept first-time buyers and landlords, while others apply tighter criteria. The deposit, rent, property and your circumstances can affect your options.
Are buy-to-let mortgages interest-only?
Many are interest-only, but repayment options may also be available. With interest-only, the original balance remains outstanding at the end of the term.
Are buy-to-let mortgages more expensive?
Rates, fees, deposits and criteria can differ from residential mortgages. The overall cost depends on the product, loan-to-value, property and your circumstances.
How many buy-to-let mortgages can I have?
There is no single limit across every lender. With several rentals, a lender may assess the wider portfolio as well as the new mortgage.
Can I live in my buy-to-let property?
A buy-to-let mortgage lets you finance a property that you rent to tenants. It is not for your own home. Ask your lender before you change how you use the property.
Are buy-to-let mortgages regulated?
The Financial Conduct Authority does not regulate some buy-to-let mortgages. The position can depend on the transaction and your circumstances.
