J.P. Morgan shifts base case, sees UK bank surcharge rising to 5%

J.P. Morgan now assumes the UK banking surcharge rises from 3% to 5%, which it says would cut 2027 EPS by 2.7% for Lloyds, 2.4% for NatWest, 1.3% for Barclays and 0.6% for HSBC. The bank also flagged reserve remuneration changes as a larger risk, estimating potential 2027 profit hits of 29% for Lloyds, 42% for NatWest, 48% for Barclays and 7% for HSBC if reserves paid 0%. Despite the tax/policy headwinds, J.P. Morgan still sees supportive banking fundamentals and prefers UK Asian and Irish banks over domestic lenders.

Analysis

The market is still underpricing how a UK-specific tax shock propagates through bank valuation multiples rather than just EPS. Domestic lenders with larger UK profit pools and higher payout expectations should see the sharpest de-rating because the issue is not the absolute tax rate alone, but the precedent it sets: once the policy debate shifts from a one-off surcharge to a broader banking contribution, investors will demand a structurally higher cost of equity for UK retail-heavy franchises.

The second-order winner is not necessarily another UK bank, but foreign or structurally diversified lenders with lower domestic political beta. HSBC is relatively insulated versus NWG and Lloyds because its earnings mix reduces exposure to Westminster risk, while Barclays sits in the middle: less surcharge-sensitive than Lloyds/NWG, but much more exposed than global peers if reserve-remuneration rhetoric gains traction. That reserve-remuneration debate is the true tail risk because it would hit profitability mechanically without requiring a recession, and it would likely compress sector ROE expectations across the cycle.

Catalyst timing is important: surcharge changes are a months-to-budget story, while reserve remuneration would be a lower-probability but much faster multiple shock if it enters formal policy discourse. The near-term support from benign credit and volume growth limits immediate downside, but it also makes the stocks vulnerable to any policy headline because valuations are already screening cheap on forward PE and yield. That sets up a classic low-volatility policy squeeze: limited fundamental deterioration, but enough headline risk to stop a rerating.

The consensus may be too sanguine on the idea that only the surcharge matters. If investors begin to price even a small probability of reserve changes, the whole domestic bank complex should trade as a quasi-regulated utility with lower terminal ROE, not as a cyclical value recovery. In that scenario, any relief rally should be sold into unless there is explicit government or BoE pushback that closes the policy overhang.

Key Decisions for Investors

• Short NWG vs long HSBC for 1-3 months: NWG has the highest UK policy beta and the largest estimated earnings sensitivity; HSBC is relatively insulated by mix. Favor a relative-value position over outright shorting domestic banks.
• Buy put spreads on NWG and BCS into the next UK fiscal headlines: target 3-6 month maturities to capture policy optionality while limiting theta. Best risk/reward if implied vol lags headline risk.
• Trim or avoid adding to Lloyds/NWG on any near-term bounce: the valuation case is vulnerable if the market moves from surcharge concern to reserve-remuneration repricing, which would justify a lower sector multiple even absent earnings misses.
• Long HSBC on a 6-12 month horizon versus the UK domestic basket: the name should command a persistent political-risk discount, but it is the cleanest way to stay exposed to UK banking without full domestic tax/regulatory beta.
• For longs already held, use rallies to pair off into BCS or NWG strength and rotate toward lower political-beta lenders; the upside from cheap multiples is capped until budget clarity removes the policy overhang.