What You Should Not Do After Receiving a Mortgage Offer in the UK

Receiving a Mortgage Offer is one of the most important stages of buying a property. It means the lender has reviewed your application, assessed your income, credit history, deposit and the property, and agreed to offer you a mortgage.

However, a Mortgage Offer does not mean the purchase is complete.

Until Completion, when the lender releases the funds and the property purchase is legally finalised, several weeks may still pass. During this period, it is important to avoid major financial or employment changes that could affect your application.

Below are the main things you should avoid after receiving a Mortgage Offer.

1. Do Not Change Jobs Without Speaking to Your Mortgage Broker

Changing jobs does not always mean your mortgage will be withdrawn, but it can trigger additional checks.

A lender may need to reassess your application if you:

• move from a permanent contract to a temporary one;
• start a probation period;
• become self-employed;
• accept a lower guaranteed salary;
• have a gap between your old and new jobs.

Even if the new job pays more, the lender may still want to see a signed employment contract, confirmation of your start date or further evidence of income.

Before resigning or accepting a new role, speak to your mortgage broker.

2. Do Not Reduce Your Income or Working Hours

Your mortgage was approved based on the income stated in your application.

If your income falls before Completion, the lender may need to review whether the mortgage is still affordable.

This may apply if you:

• reduce your working hours;
• stop regular overtime;
• take unpaid leave;
• lose bonuses or commission;
• significantly reduce your business activity;
• stop working altogether.

Even if you believe you can still afford the monthly payments, the lender must assess the application according to its own affordability rules.

3. Do Not Take Out New Credit

Many buyers start purchasing furniture and appliances as soon as they receive their Mortgage Offer.

However, taking out new credit before Completion can change your financial profile.

It is best to avoid applying for:

• personal loans;
• new credit cards;
• car finance;
• furniture or appliance finance;
• Buy Now, Pay Later agreements;
• a new overdraft;
• expensive mobile phone contracts.

New monthly commitments can reduce the amount of disposable income available and may affect the lender’s affordability calculation.

A high number of new credit applications can also lead to additional credit checks.

4. Do Not Buy a Car Before Completion

Buying a car is one of the most common financial changes made after receiving a Mortgage Offer.

If you pay for the car from your savings, you may reduce the money available for your deposit and purchase-related costs.

If you use PCP, Hire Purchase or another type of car finance, you create a new monthly financial commitment.

Both situations may affect your mortgage application.

Unless the purchase is essential, it is usually safer to wait until after Completion.

5. Do Not Use the Money Set Aside for Your Deposit

Your deposit must remain available until the property purchase is completed.

Avoid using this money for:

• holidays;
• investments;
• a car purchase;
• large household purchases;
• transfers to relatives;
• paying off other commitments without first discussing it.

You may also need funds for solicitor fees, surveys, property taxes, removals and other costs.

If the amount available for the purchase falls, the transaction may be delayed or affected.

6. Do Not Move Large Sums Without a Clear Explanation

Before Completion, your solicitor or lender may ask for further evidence showing where your funds came from.

Questions may arise if:

• a large sum arrives from another person;
• money is moved through several accounts;
• there are significant cash deposits;
• funds arrive from abroad without supporting documents;
• deposit money is moved into cryptocurrency or investments.

Transfers between your own accounts are not automatically a problem. However, you should be able to explain the movement of money and provide statements where required.

If a family member is helping with the deposit, this should be declared and documented correctly as a Gifted Deposit.

7. Do Not Miss Existing Payments

Continue paying all existing commitments on time, including:

• credit cards;
• personal loans;
• car finance;
• mobile phone contracts;
• utility bills;
• Council Tax;
• rent or your current mortgage.

Late or missed payments can affect your credit history.

The lender may have already completed a credit check, but further checks can still take place before Completion.

8. Do Not Hide Important Changes

One of the biggest mistakes is deciding not to tell your broker about a change in your circumstances.

For example:

• you changed jobs;
• your income decreased;
• you took out a new loan;
• part of the deposit is no longer available;
• your personal circumstances changed.

A change does not always mean the mortgage will be withdrawn.

In many cases, the situation can still be managed. However, it is important to raise the issue early, before it becomes a problem at the final stage of the purchase.

What Should You Remember?

A Mortgage Offer is a major step, but the transaction is not complete until Completion.

During this period, try to keep the financial situation on which the lender based its decision as stable as possible.

Avoid changing jobs without advice, reducing your income, taking out new credit, buying a car on finance, using your deposit or making unexplained large transfers.

Continue paying all commitments on time and tell your mortgage broker about any important changes.

Following these simple steps can reduce the risk of additional checks, delays or complications before you receive the keys to your new home.