Mortgage Rates Rising: Why You Need to Act Now (March 2026)

What's Happening to Mortgage Rates Right Now?

As of 6 March 2026, UK mortgage rates are rising sharply following the escalation of the US–Iran conflict in the Middle East. Major lenders including HSBC, Nationwide Building Society, and Coventry Building Society have confirmed they are increasing fixed-rate mortgage products — some from today (Friday 7 March) and others from Monday 10 March.

The cause is a rapid spike in swap rates — the wholesale money-market benchmark that determines how banks price their fixed-rate deals. According to Investing.com data, on 6 March the one-year swap rate hit 3.96%, the three-year swap reached 4.03%, and the five-year swap surged to 4.13% — all showing a massive increase driven by Middle East uncertainty.

According to The Independent, Nationwide confirmed: "Like other lenders, we are having to increase rates following a significant rise in swap rates as a result of recent global events."

Why Do Swap Rates Matter for Your Mortgage?

Swap rates are the financial instruments banks use to hedge the cost of lending at a fixed rate. When you take out a fixed-rate mortgage, the lender's pricing is largely determined by what it costs them to borrow on the money markets — and that cost is reflected in swap rates.

When geopolitical events cause uncertainty, investors demand higher returns to compensate for risk. Oil and gas prices have surged as conflict in the Middle East intensifies, reigniting inflation fears. Higher inflation expectations push up gilt yields and swap rates, which in turn force lenders to increase mortgage pricing.

Adam French, head of consumer finance at Moneyfacts, put it plainly: "Global geopolitical events move markets, markets move swap rates, and swap rates ultimately shape the deals available to borrowers."

Which Lenders Are Increasing Rates?

Several major lenders have already announced repricing or are expected to follow:

• HSBC UK — Increasing residential and buy-to-let fixed mortgage rates from Friday 7 March
• Nationwide Building Society — Increasing select mortgage rates from Friday 7 March, including deals for first-time buyers, home movers, and remortgage customers
• Coventry Building Society — Confirmed rate increases from Monday 10 March
• Santander — Already pulled its competitive 3.99% five-year fixed rate from sale earlier in the week

As reported by Mortgage Strategy, brokers expect more lenders to follow in the coming days. Adam Stiles of Helix Financial Partners warned: "Coventry and HSBC won't be the first lenders running for the hills and increasing rates."

What About the Bank of England Base Rate?

Just a week ago, a Bank of England rate cut at the next meeting on 19 March seemed almost certain. That outlook has now changed dramatically.

The Bank held rates at 3.75% last month, with Governor Andrew Bailey suggesting further reductions were likely. However, Wales Online reports that the National Institute of Economic and Social Research (NIESR) now forecasts that high energy prices could force the Bank to increase rates above 4%.

Broker Omer Mehmet of Trinity Finance summed up the shift: "Just a week ago, it seemed like a Bank of England rate cut this month was inevitable and now some are predicting there will be no cuts in 2026."

Why You Should Act Quickly

The key message from brokers across the industry is the same: lock in a rate now before further increases hit. Here's why speed matters:

• Rates can change overnight — Lenders frequently pull products with just 24 hours' notice, as Santander demonstrated this week
• A rate lock protects you — Most mortgage offers are valid for 3–6 months, so even if rates rise further, your agreed rate is protected
• No obligation — Getting a mortgage agreement in principle doesn't commit you, but it secures today's pricing
• Waiting could cost thousands — Even a 0.25% rate increase on a £200,000 mortgage adds roughly £30 per month or £10,800 over the life of a 30-year mortgage

This applies whether you're a first-time buyer, home mover, or looking to remortgage. If your current deal is ending in the next six months, locking in now could save you thousands.

Is This a Temporary Blip or a Lasting Shift?

Industry opinion is divided. Some brokers believe this is a short-term reaction that will settle:

"If the situation in the Middle East starts to stabilise, swaps could fall as fast as they rose, turning this hike into a temporary blip rather than a market crash." — Darryl Dhoffer, The Mortgage Geezer

Others are more cautious. Dariusz Karpowicz of Albion Financial Advice noted: "Coventry and HSBC repricing is likely the first domino, not the last. The real question is whether this is a blip or a shift."

Nouran Moustafa of Roxton Wealth offered a balanced perspective: "I would expect the immediate response to be a pause in rate cuts and some selective repricing rather than aggressive increases. Mortgage rates are driven by funding costs over time, not single events."

Regardless of which camp proves right, the prudent strategy is the same: secure a rate now while competitive deals still exist. If rates fall again later, you can always remortgage to a better deal.

What Should You Do Next?

If you're buying a home, moving, or your current mortgage deal is ending soon, here are the steps to take today:

1. Speak to a broker — A fee-free mortgage broker like Amazon Mortgages can search thousands of deals across the whole market at no cost to you
2. Get an Agreement in Principle — This takes minutes and secures a rate at today's pricing
3. Consider your options — Fixed rates give you certainty, while tracker rates could benefit if the Bank of England does eventually cut
4. Remortgage early — If your deal expires in the next 6 months, most lenders let you lock in a new rate now and switch when your current deal ends
5. Don't panic — Markets are volatile, but with expert advice you can make informed decisions

At Amazon Mortgages, we offer 100% fee-free advice with access to the whole market. Get in touch today for a free, no-obligation consultation before rates move further.