Autumn Budget 2026 Predictions: What Could It Mean for Mortgage Borrowers?

TL;DR

When Is the Autumn Budget 2026, And Why Could It Affect Mortgages?

The Budget does not set mortgage rates, as lenders price their own products. However, it can affect borrowers in two ways:

• Directly: through changes to property taxes, stamp duty or government home-buying schemes.
• Indirectly: through how financial markets react to the government’s borrowing and spending plans, which can influence the swap rates lenders use to price fixed-rate mortgages.

Could The Budget Change Mortgage Rates?

It is possible that mortgage rates may change, but this would not happen directly as a result of a government mandate. The base Bank Rate is set strictly by the Bank of England’s Monetary Policy Committee, rather than by the Chancellor.

During their recent meeting on 17 September 2026, the Bank of England opted to hold the Bank Rate steady at 3.75%. It was a split decision, with six committee members voting to maintain the current rate, while the remaining three members voted to raise the rate to 4%. The committee is due to make its next decision on Thursday 5 November 2026, which falls just eight days after the Budget. This decision will be announced alongside the publication of the November Monetary Policy Report.

For anyone looking to secure a new fixed-rate mortgage, the key factor to watch is not just the base rate, but swap rates. Fixed mortgage rates are much more closely linked to swap rates, which essentially reflect where financial markets expect interest rates to go in the future. If the markets view the upcoming Budget as a move that will add to inflation or significantly increase government borrowing, swap rates may rise. When swap rates rise, lenders face higher costs, and they may pass these costs on by repricing their fixed-rate products upwards. On the flip side, if the Budget reassures the financial markets and demonstrates fiscal restraint, the exact opposite may happen, which could lead to more competitive fixed rates. Ultimately, nobody can say with absolute certainty which way the rates will move in the immediate aftermath of the Chancellor’s speech.

Following the September base rate decision, Sarah Coles of AJ Bell observed that markets were largely expecting an initial rate rise in November, as reported by MoneySavingExpert in September 2026. However, market expectations are incredibly fluid and can change very quickly. The Budget is just one of several critical factors that the Bank of England may take into careful consideration when making its next move. If you are unsure about your options, our guide to fixed vs tracker mortgages explains exactly how each distinct type of product responds to these types of rate changes.

What Borrowers May Want to Watch on Budget Day

• The government’s borrowing plans. The financial markets are incredibly sensitive and may react sharply to how much the government intends to borrow over the coming years.
• The Office for Budget Responsibility’s official forecasts for both inflation and economic growth, which are commonly published alongside the main Budget documents.
• Any surprise announcements regarding property taxes, stamp duty thresholds, or brand new home-buying schemes.
• How the major lenders respond in the following days. Some banks and building societies may reprice their products immediately, while others may choose to hold their nerve and wait.

Is Stamp Duty Expected to Change?

Based on the current noise coming from Westminster, reports heavily suggest that stamp duty will not be changing. The Prime Minister reportedly ruled out changing or scrapping stamp duty entirely at this specific Budget, according to a report by Reuters back in July 2026.

• The Prime Minister has also rejected reports of a single annual property tax replacing stamp duty and council tax.
• In its Budget guide updated on 23 October 2026, property law firm Setfords expects current first-time buyer relief and the additional-homes rate to stay as they are.

Stamp duty is commonly based on the rules in force when your purchase completes, so it is worth checking the final Budget details with your solicitor. You can estimate your current liability with our stamp duty calculator.

What Could the Budget Mean for First-time Buyers?

If you are trying to get onto the property ladder, you will likely be looking out for more detail on the Your First Home scheme. The government first announced this brand new scheme on 26 September 2026, and full, operational details are expected to be thoroughly confirmed at the Budget.

Based on what has been announced so far, the scheme:

• Is designed specifically for first-time buyers living in England.
• Only applies to new-build homes from specific developers who have officially signed up to participate in the scheme.
• Requires the buyer to put down a deposit of 2.5% of the total purchase price.
• Includes a government equity loan covering 20% of the purchase price, which is initially entirely interest-free.
• Leaves the buyer to arrange a standard mortgage to cover the remaining 77.5% of the property value.

However, there are several crucial details still to be confirmed. These missing pieces of the puzzle include household income caps, local property price caps, the exact length of the interest-free period on the equity loan, and the official launch date for the scheme. Setfords also reports that we are still waiting for announcements regarding the bonus structure, annual limits, price caps, and the launch date of a proposed First Time Buyer ISA.

Price caps in particular may affect which homes qualify. We explain how the scheme could work in our guide to the Your First Home scheme, and our first-time buyer mortgages page covers the wider options.

What could change for owners of higher-value homes?

A new charge is already planned, and reports on further changes conflict.

• The High Value Council Tax Surcharge on homes valued at £2 million or more was announced at the 2025 Budget and is due to start in April 2028.
• Some reports suggested the threshold could fall to £1.5 million. The Financial Times later reported that this had been ruled out, according to the HomeOwners Alliance (updated 22 October 2026).
• The government has consulted on an additional charge for non-UK resident owners of homes over £2 million, according to Setfords. No rate has been proposed.

For most borrowers, this surcharge is unlikely to apply. It may be more relevant to anyone buying or remortgaging a higher-value home who wants to understand future running costs.

What could the Budget mean for landlords?

The buy-to-let sector often bears the brunt of tax changes. Some significant changes are already enshrined in law, while others remain pure speculation at this stage.

Already legislated changes

From 6 April 2027, individual landlords are officially due to pay income tax on their property income at rates of 22%, 42%, and 47%. This major shift was previously set out in the Finance Act 2026, meaning it is already locked into the system.

Reported but unconfirmed changes

When it comes to Capital Gains Tax, the Financial Times recently reported that the Chancellor had ruled out a targeted rise, according to the HomeOwners Alliance. Despite this, numerous other financial commentators continue to actively discuss possible changes, so the situation remains uncertain. Regarding holiday lets, one widely reported idea would see short-term holiday lets treated exactly as second homes for council tax purposes, according to Setfords. This proposal is completely unconfirmed right now.

Significant tax changes can heavily affect a landlord’s overall financial returns. Because of this, anyone currently planning a buy-to-let purchase or remortgage may want to thoroughly review their underlying figures with a qualified accountant before proceeding. Our buy-to-let mortgages page clearly explains how lenders commonly assess the viability of rental properties.

Reported, ruled out and already confirmed: a quick summary

Should You Wait for the Budget Before Fixing or Remortgaging?

There is no single right answer, as it depends on your circumstances. Waiting may not lead to a better rate, and acting earlier may not either.

• Many lenders let you secure a new rate several months before your current deal ends, and some may let you switch if a lower rate becomes available before completion. Criteria vary.
• Lenders can withdraw or reprice products at short notice, including around major announcements.
• If your deal ends without a new one in place, you may move to your lender’s standard variable rate, which may be higher.
• A product transfer and a remortgage each have different costs and features, and neither is automatically better.
• Comparing total costs, including fees and any early repayment charges, gives a clearer picture than headline rates alone.

What Happens After the Budget?

Once the Chancellor has spoken and the papers are published, the endless media speculation will be swiftly replaced by confirmed, tangible measures. Both lenders and financial markets will react over the following days, setting the stage for the Bank of England’s crucial interest rate decision on 5 November. We will be sure to publish a comprehensive follow-up article clearly explaining what the newly confirmed announcements mean for ordinary mortgage borrowers.

How WIS Mortgages Can Help

Our advisers are CeMAP-qualified, and our leadership team includes qualified accountants, so we are used to explaining how wider financial changes may affect a mortgage. We work with high-street and specialist lenders. Any broker fee, and any commission we may receive from a lender, will be explained and agreed with you in writing before an application is submitted.

Once the Budget has been delivered, we can review your options in light of what has actually been announced, whether you are buying, remortgaging or letting property.

If you would like to understand how the Budget could affect your plans, call us on 020 3011 1986 or contact us to speak to a mortgage adviser.

Your home may be repossessed if you do not keep up repayments on your mortgage.

Frequently Asked Questions

Will the Autumn Budget 2026 raise mortgage rates?

Not directly. The Chancellor does not set Bank Rate or mortgage rates. However, market reaction to the Budget may move swap rates, which can lead lenders to reprice fixed-rate mortgages.

Will stamp duty change in the Autumn Budget 2026?

Reports suggest not. The Prime Minister reportedly ruled out changing or scrapping stamp duty at this Budget, although nothing is confirmed until the Chancellor’s statement.

When will the Your First Home scheme launch?

The launch date has not been confirmed. Full details, including income caps, price caps and the launch date, are due at the Budget on 28 October 2026.

Should I fix my mortgage before the Budget?

It depends on your circumstances. Rates may rise, fall or stay similar after the Budget, so it can help to compare the total cost of your options with an adviser rather than trying to time the market.

Is the £2 million council tax surcharge threshold changing?

Reports conflict. Some suggested a lower £1.5 million threshold, while the Financial Times later reported this had been ruled out. The surcharge itself is due to start in April 2028.

Are landlord tax rates going up?

Yes, from April 2027. Income tax on property income is due to rise to 22%, 42% and 47% under the Finance Act 2026. Any further changes are speculation until the Budget.

When is the next Bank of England interest rate decision?

Thursday 5 November 2026. The Bank will also publish its November Monetary Policy Report on the same day.

Could the Budget affect how much I can borrow?

Possibly, but indirectly. Lenders base affordability on your income, outgoings and their own stress tests, so changes to tax, living costs or interest rate expectations may affect the figures some lenders use.

Does the Budget affect remortgaging and product transfers in the same way?

Both may be affected if lenders reprice products after the Budget. The right option depends on your circumstances, so it can help to compare the total cost of each.

Can the Budget affect a mortgage application already in progress?

Possibly. Lenders may reprice products before an offer is issued. Once an offer is issued, the rate is commonly held for the offer’s validity period, although terms vary by lender.

Contact Us

Information checked on 26 October 2026.

Pre-Budget reports may change, and nothing is confirmed until the Chancellor delivers the Budget.

Mortgage availability and lending criteria can change.

All applications are subject to status, affordability, property suitability and lender criteria.

This article is provided for informational and educational purposes only and does not constitute personal financial, legal, or tax advice. Mortgage criteria and rates are subject to individual circumstances and lender terms.

WIS Mortgages is a trading name of WIS Contractor Mortgages Limited, which is authorised and regulated by the Financial Conduct Authority (FCA number 824411). We are a credit broker, not a lender.