Tax Advisers in the City of London.

Tax complexity in the City

The Square Mile concentrates a denser set of tax-sensitive sectors than anywhere else in the UK. Around the EC postcodes you have: traditional banks and broker-dealers along Lombard Street, Threadneedle Street and Cheapside; insurance and reinsurance in the Lloyd’s market around Lime Street; asset managers and hedge funds clustered between Bank and Liverpool Street; large legal partnerships in the Inns of Court; Big Four and other accountancy in the eastern City; and a growing cluster of fintech, crypto and digital asset firms across Shoreditch, Old Street and the City fringe.

Three areas of tax work come up most often. Financial-services VAT is genuinely difficult — exemption boundaries (especially partial exemption recovery), TOMS for insurance, the financial-services VAT rules around outsourcing and intermediary services, and the FCA-regulated activity questions that flow into VAT analysis. Partnership taxation for legal, accounting and asset-management LLPs has nuances around salaried-member rules, mixed-member rules, and the disguised remuneration provisions that catch a lot of firms by surprise. And crypto and digital asset taxation — both for the holding individuals and the trading entities — remains an evolving area where HMRC’s guidance has matured significantly in the past two years.

On the corporate side, the January 2026 transfer pricing reforms and the OECD Pillar Two rules for groups above €750m revenue are reshaping how multinationals in the City structure their UK operations. For smaller groups (below the Pillar Two threshold but above the UK’s transfer pricing exemption), the new SME rules carry surprising compliance cost.

Recent City engagements

Recent City engagements drawn from the broader market — anonymised but representative:

• FCA-authorised asset manager, EC2 — 18 staff, £180m AUM. Work covered partnership taxation review (LLP), salaried-member rules analysis, PAYE/IR35 review of contractors, and a corporate tax review of the management company.
• Crypto-asset trading company, near Old Street — limited company holding inventory of digital assets for trading. Work covered trading versus investment treatment analysis, VAT registration position, accounting policy for digital assets under FRS 102, and corporation tax computation including the realised/unrealised gain treatment.
• Insurance-broking partnership, near Lloyd’s — 12-partner LLP plus a service company. Work involved a review of the LLP/service company structure for tax efficiency, salaried-member rules application to junior partners, and a pension contribution strategy across the partner group.
• Fintech BNPL platform, Shoreditch fringe — Series B-funded startup with £14m turnover. Work covered R&D relief claim (advance assurance review), EMI option scheme refresh, transfer pricing for the small EU subsidiary, and corporation tax loss-utilisation planning.
• Legal partnership, near the Inns of Court — 8-partner LLP. Work covered the standard partnership taxation cycle plus a structuring review ahead of two senior fee-earners being promoted to equity partner.

The City is where complex corporate tax and partnership tax meet daily. We approach this work from a Chartered Tax Adviser background rather than a generic accountancy one — meaningfully different.