NatWest (NWG) Stock Analysis: Revenue Growth, Profit Margins and Valuation

UK bank taxation stopped being a background risk on Friday 16 October. Press reports — originating with the Guardian and picked up across the market the same morning — indicated that Chancellor John Healey is considering reversing the cut that took the bank surcharge from 8% to 3%, restoring it to 8% in his Budget on 28 October. KBW, in a note dated 12 October, put the figure at stake at roughly £2bn a year for the Treasury and estimated the change could take about 6% off lenders' earnings. UK bank shares led the FTSE 100 lower on the reports while the index itself made further gains.

For anyone trying to value NatWest Group on Monday morning, that is the only new input — and it is a conditional one. The company's own numbers have not changed: half-year attributable profit of £3,035m, up 22.0%, a return on tangible equity of 19.7% and a CET1 ratio of 13.2%, with full-year income guidance raised to around £17.9bn. What changed on Friday is the probability the market attaches to a five-percentage-point tax on the profits those numbers describe, and the size of the move tells you that probability is not large.

What actually happened

The mechanism is simple enough. The bank surcharge is levied on banking profits above an allowance and sits on top of the main rate of corporation tax, so moving it from 3% to 8% raises the headline rate on the profits it touches by five percentage points. Jeremy Hunt cut it from 8% to 3% as chancellor; the reports suggest Healey is weighing whether to put it back. A second option under discussion would restrict banks' ability to use historical losses to offset current profits — a different lever with a different incidence, falling hardest on the lenders that accumulated the largest loss pools after the financial crisis.

Two things must be said plainly about the status of all this. First, it is press reporting of options under consideration, not announced policy. No figure has been confirmed, and the Budget is still over a week away. Second, the 8% figure is not the only number in circulation: at least one analysis of the reports argues that a smaller rise — two percentage points, taking the surcharge to 5% — is the more likely outcome. The market is therefore pricing a distribution of possible increases, not a single known one.

The share reaction was correspondingly measured, and it is worth being precise about what is and is not established. Reported moves for NatWest on Friday range from about 1.2% to about 2% down depending on the hour quoted, with intraday prints in the 660p to 666p range; Lloyds was variously reported down 1.8%, 2.3% and 2.5%, the last at around 103p. These are snapshots rather than a settled closing position, and the sources do not agree on a close. What they do agree on is the shape of the session: Lloyds and NatWest led the FTSE 100 fallers while the index as a whole rose, which makes this a sector-specific repricing rather than a market move. UK Finance, the industry's trade body, warned the proposal would "weaken the UK's competitiveness".

Why the market reacted the way it did

Here is the arithmetic that makes Friday interesting. If KBW is right that the surcharge rise would cost the sector about 6% of earnings, and NatWest fell somewhere between 1.2% and 2%, then the market moved roughly a quarter to a third of the way towards the full impact. Read as an implied probability — crudely, but the crudeness is the point — the market put well under a one-in-three chance on the 8% version of this happening as reported.

That scepticism is not unreasonable. Measures of this kind have been floated at previous Budgets and not enacted, industry opposition is already organised and public, and the competitiveness argument has historically carried weight with Treasury officials precisely because the UK's banking tax burden is already high relative to peers. A chancellor who needs revenue also needs the sector to keep lending, and a five-point increase is a large step to take in a first Budget. The alternative 5% scenario costs the sector roughly two-fifths of what the 8% scenario costs, and a market pricing a blend of the two, weighted towards no change at all, produces something very close to the move actually observed.

Why NatWest in particular, rather than the sector in aggregate? Because the surcharge is a tax on UK banking profits, and NatWest is the most domestically concentrated of the large UK lenders. Barclays earns roughly half its profit outside UK retail banking and is diluted accordingly; HSBC and Standard Chartered are largely insulated, since the great majority of their earnings arise elsewhere. Lloyds is comparably domestic and is arguably more exposed on the historical-losses option. On the surcharge itself, NatWest is close to a pure-play read on the policy.

The Openbook read

Profitability is the factor the proposal attacks directly, and it is also NatWest's strongest. A 19.7% return on tangible equity in the first half is sector-leading and sits above the company's own raised target of more than 19% for 2026, itself lifted from more than 17% at the full-year 2025 stage. Apply KBW's 6% earnings haircut mechanically and a 19.7% RoTE becomes something closer to 18.5% — still comfortably above the cost of equity for a bank of this profile, and still above the target NatWest set itself a year ago. That is the central point about this story: the 8% surcharge, if enacted in full, would compress a genuinely strong profitability profile rather than break it.

Growth absorbs the same arithmetic in a different place. Full-year 2026 income excluding notable items is now guided to about £17.9bn, including roughly £275m relating to the Evelyn Partners acquisition, with operating expenses excluding litigation and conduct expected around £8.5bn. The surcharge does not touch the income line at all — it is a tax on profit, not on revenue — so the growth trajectory the company has guided to survives intact. What changes is the proportion of that growth that reaches shareholders.

Solvency is where the detail rewards attention. CET1 stood at 13.2% at the half year against a continued target of around 13.0%, which is a deliberately thin buffer by recent standards and reflects capital deployed rather than capital lost: the Evelyn Partners deal absorbed roughly 140 basis points of CET1 in the second quarter, including £2.7bn of goodwill and intangible deductions and £1.1bn of risk-weighted asset increase. A higher surcharge reduces post-tax earnings and therefore the rate of organic capital generation, which matters more when a bank is operating close to target than when it is sitting on surplus. It is not a capital adequacy question; it is a question about how quickly the buffer rebuilds.

Momentum is the factor most directly disturbed, and the least informative. A one-to-two percent fall on a press report, in a session where the wider index rose, is noise relative to the stock's 2026 trajectory — but it is noise with a known resolution date, which is unusual. Momentum between now and 28 October is effectively a function of Budget speculation rather than of anything NatWest does.

Reward/Risk is the factor that genuinely requires a view, because this is a binary with a date on it. The downside is bounded and quantified: roughly 6% of earnings on KBW's estimate for the full 8% scenario, less for the 5% variant, nothing if the sector is left alone. The upside is the removal of an overhang that has been suppressing UK bank valuations intermittently for months. Because the market has priced only a fraction of the downside, most of the 8% scenario remains unpriced: for Friday's reaction to prove proportionate, the Budget has to leave the surcharge alone or raise it by less than reported. Set against that, the capital return policy is unchanged, with dividends still targeted at around 50% of attributable profit, though the next buyback announcement has been moved to the full-year 2026 results rather than the third quarter.

The read-across

The policy sorts the UK-listed lenders by domestic earnings concentration, and that ordering is the read-across in its entirety. NatWest and Lloyds sit at the exposed end, which is why they led the fallers together; both are predominantly UK banks whose profits are almost entirely within the surcharge's reach. Barclays occupies the middle, with its investment bank and US consumer business earning outside the UK ring-fence. HSBC and Standard Chartered sit at the insulated end.

The historical-losses option would reshuffle that order rather than reinforce it, since it depends on the size of each bank's accumulated loss pool rather than on where its profits currently arise. That is the under-discussed risk in Friday's reports: the two options are not simply larger and smaller versions of the same measure, and the second one would fall on a different set of names in a different proportion. Comparative factor and valuation detail across the UK banks is on the Openbook screener.

There is a sector-wide consideration beyond any individual name. UK banks have re-rated through 2026 on improving returns, and part of that re-rating rested on an assumption of fiscal stability towards the sector. A five-point surcharge increase would not threaten any major lender's solvency, but it would reset the earnings base from which every UK bank multiple is calculated — which is why a rumour moved the whole group on a day the index rose.

What to watch next

Two dates, two days apart, and in this order. The Budget on 28 October resolves the binary: the surcharge either rises, rises by less than reported, or does not rise. Watch not just the headline rate but whether the historical-losses restriction appears alongside it, and whether any increase is phased — a staged implementation would materially reduce the near-term earnings impact relative to KBW's estimate.

Then NatWest's third-quarter results on Friday 30 October, published at 7:00am GMT with a management presentation at 9:00am from chief executive Paul Thwaite and finance director Katie Murray. The sequencing is fortunate for anyone trying to read this story, because management will be taking questions on a known Budget outcome rather than a rumoured one, and the commentary on capital generation, the £17.9bn income guidance and the path to the full-year buyback decision will all be framed by whatever happened 48 hours earlier. Beyond that, NatWest holds an Investor Spotlight on private banking and wealth management on 25 November, which is where the Evelyn Partners capital outlay will be expected to start justifying itself.