Fintech, Private Credit and Digital-Asset FirmsThin moat

Citigroup (C) — moat facet

Citi's newest rivals carry none of its regulatory costs, and its own consent order makes them hard to buy.

The competitors Citi describes most carefully are not banks. Its annual report names "private credit, financial technology and digital asset companies" among its rivals1, and warns that some face "less stringent legal, regulatory and supervisory requirements"2.

Services fee revenue ($M)4,96720215,33520225,58620236,01220246,3852025Citigroup historical supplement, 3 April 2026
Fees still rising, slowly.

That asymmetry is the whole relationship. Citi spends heavily on meeting its regulators: transformation investments rose to about $3.3 billion in 2025, largely on data and controls3. A payments start-up or a private credit fund carries none of that cost, and can price a cross-border transfer or a corporate loan without holding a bank's capital against it.

The usual answer, buying the best of them, is harder for Citi than for most banks. Its 2020 consent order with the OCC requires Citibank to obtain prior approval of any significant new acquisition4.

Citi's own plan is to outspend them. Its Investor Day set out about $5 billion of cumulative incremental investment from 2026 to 20285, on top of the transformation spending.

Citi's answer includes the same tools. Its Investor Day said more than 10,000 of its engineers use advanced AI, that automated code reviews ran at about 1.5 million, and that an application migration estimated at 12 months took four weeks6.

Citi says these firms "continue to expand their offerings of services traditionally provided by financial institutions"7. Its answer in Services is spending: the Investor Day priorities are "Innovative payments, liquidity and custody solutions" and to "Invest in next-generation platforms"8, both of which are budgets a start-up cannot yet match.

In corporate payments Citi is still growing: commercial card spend was $20 billion in the second quarter of 2026, up 12%9.

So Citi must build or partner. The number to follow is Services fee revenue, which grew from $4,967 million in 2021 to $6,385 million in 202510; a year of decline in those fees while payment volumes grew would show the lighter-regulated rivals taking the price.

Moat trajectory: Narrowing

Transformation spend about $3.3bn in 2025; acquisitions need OCC approval.

The number that tests this moat
Reported
Services fee revenue, 2025
$6,385M vs $4,967M in 2021

The part of Services most exposed to cheaper, lighter-regulated rivals; a decline with volumes rising would show them taking the price.

Source: Citigroup historical supplement (recast), Services ↗
References
  1. ReportedIts annual report names "private credit, financial technology and digital asset companies" among its rivals, and warns that some face "less stringent legal, regulatory and supervisory requirements".
    Citigroup Form 10-K for fiscal 2025 - risk factors, competition, the 2020 consent orders, transformation spending and the card-partner concentration disclosure. — FY2025 · publ. 20 February 2026 · source ↗
  2. ReportedIts annual report names "private credit, financial technology and digital asset companies" among its rivals, and warns that some face "less stringent legal, regulatory and supervisory requirements".
    Citigroup Form 10-K for fiscal 2025 - risk factors, competition, the 2020 consent orders, transformation spending and the card-partner concentration disclosure. — FY2025 · publ. 20 February 2026 · source ↗
  3. ReportedCiti spends heavily on meeting its regulators: transformation investments rose to about $3.3 billion in 2025, largely on data and controls.
    Citigroup Form 10-K for fiscal 2025 - risk factors, competition, the 2020 consent orders, transformation spending and the card-partner concentration disclosure. — FY2025 · publ. 20 February 2026 · source ↗
  4. ReportedIts 2020 consent order with the OCC requires Citibank to obtain prior approval of any significant new acquisition.
    Citigroup Form 10-K for fiscal 2025 - risk factors, competition, the 2020 consent orders, transformation spending and the card-partner concentration disclosure. — FY2025 · publ. 20 February 2026 · source ↗
  5. ReportedIts Investor Day set out about $5 billion of cumulative incremental investment from 2026 to 2028, on top of the transformation spending.
    Citigroup 2026 Investor Day financial overview presentation - RoTCE targets, business targets for Services, Cards and Markets, efficiency ratio, transformation, liquidity and capital. — May 2026 · publ. May 2026 · source ↗
  6. ReportedIts Investor Day said more than 10,000 of its engineers use advanced AI, that automated code reviews ran at about 1.5 million, and that an application migration estimated at 12 months took four weeks.
    Citigroup 2026 Investor Day financial overview presentation - RoTCE targets, business targets for Services, Cards and Markets, efficiency ratio, transformation, liquidity and capital. — May 2026 · publ. May 2026 · source ↗
  7. ReportedCiti says these firms "continue to expand their offerings of services traditionally provided by financial institutions".
    Citigroup Form 10-K for fiscal 2025 - risk factors, competition, the 2020 consent orders, transformation spending and the card-partner concentration disclosure. — FY2025 · publ. 20 February 2026 · source ↗
  8. ReportedIts answer in Services is spending: the Investor Day priorities are "Innovative payments, liquidity and custody solutions" and to "Invest in next-generation platforms", both of which are budgets a start-up cannot yet match.
    Citigroup 2026 Investor Day financial overview presentation - RoTCE targets, business targets for Services, Cards and Markets, efficiency ratio, transformation, liquidity and capital. — May 2026 · publ. May 2026 · source ↗
  9. ReportedIn corporate payments Citi is still growing: commercial card spend was $20 billion in the second quarter of 2026, up 12%.
    Citigroup second-quarter 2026 earnings release, Form 8-K exhibit 99.1 - Services, Markets and Banking results and key metrics. — Q2 2026 · publ. 14 July 2026 · source ↗
  10. ReportedThe number to follow is Services fee revenue, which grew from $4,967 million in 2021 to $6,385 million in 2025; a year of decline in those fees while payment volumes grew would show the lighter-regulated rivals taking the price.
    Citigroup Historical Quarterly Financial Data Supplement 2021-2025 recast to the first-quarter 2026 segments - Services: revenue by line and type, geography, deposits, loans, cross-border transaction value, clearing volume, custody assets and returns. — FY2021-FY2025 · publ. 3 April 2026 · source ↗
Sources
Generated September 28, 2026