TSB is raising mortgage rates by 50 basis points (bps - one basis point equals 0.01%) on residential and buy-to-let deals from 31 March 2026 (Mortgage Finance Gazette, 30 March 2026). This is the lender's second rate increase in a week. The earlier hike was 45bps. Skipton Building Society is also raising prices by up to 25bps on fixed-rate products (Mortgage Finance Gazette, 30 March 2026).

The Repricing Cascade

Rate movements aren't random. When TSB moves 50bps, the wider market follows. Kensington is raising rates on the same date (Mortgage Finance Gazette, 30 March 2026). NatWest announced a second round of repricing within a week, with increases of up to 28bps (Mortgage Finance Gazette, 30 March 2026).

This pattern matters to your portfolio. Every rate rise shortens your refinance runway. If you've locked a deal, rates are already climbing for the next property. If you're mid-portfolio, you need to accelerate deployment before the next wave hits.

What This Means for Your Strategy

From a portfolio perspective, these moves create two distinct problems. First, if your properties are approaching remortgage dates, you've lost negotiating leverage. Rates move faster than you can refinance. Second, if you're buying now, you're competing against lenders repricing upward - the cost of capital just increased.

John Charcol's Nicholas Mendes noted that service delays extend beyond individual lenders, with processing times at HSBC around 15 working days for residential cases and 21 for refer decisions (Mortgage Finance Gazette, 30 March 2026). Slower processing combined with faster rate rises means your approved rate can expire while you're still waiting for completion.

The data shows borrowers are securing deals up to six months in advance rather than three months (Mortgage Finance Gazette, 30 March 2026). This isn't cautious - it's survival. If you're holding cash or waiting for the "right moment", that moment is compressing.