The Services NetworkWide moat

Citigroup (C) — moat facet

Services is the business that makes Citi worth owning: a payments and custody network earning about a quarter on its capital.

Citi's moat is Services, and the rest of the bank sits beside it. Services, which combines Treasury and Trade Solutions with Securities Services, earned $22,636 million of revenue and $8,187 million of income from continuing operations in 20251. Its return on tangible common equity was 24.6%, against 7.7% for Citi as a whole23, and 30.9% in the second quarter of 20264.

Services return on tangible common equity (%)15.8%202117.5%202216.1%202322.4%202424.6%202530.9%Q2 2026Citigroup historical supplement, 3 April 2026; Q2 2026 earnings release
From about 16% to about 31%.

The business moves money for multinational companies, financial institutions and governments. TTS provides "cash management, payments and trade and working capital solutions"5, and Securities Services holds and settles investors' securities. Citi earns a spread on the deposits these clients leave with it and a fee for each transaction6.

The returns have climbed as the business grew. Services RoTCE was 15.8% in 2021, 17.5% in 2022, 16.1% in 2023, 22.4% in 2024 and 24.6% in 2025, and its efficiency ratio fell from 61% to 48%7. Revenue rose from $12,539 million to $22,636 million in those years8, about 81%9.

The reasons are the four on the pages below: the flow of cross-border payments, clients wired into three services for fifteen years, a custody book, and a footprint outside America that few rivals have. The threats are two: most of the revenue is a spread on deposits, and Citi pays more for its deposits than its largest American rivals.

Services also lends, mostly to the same clients. Its average loans were $93 billion in 202510 and $103 billion in the second quarter of 2026, up 10% on a year earlier11. The loans are small against deposits of about a trillion dollars, which is what makes Services a funding business for the rest of Citi.

The first quarter of 2026 already showed the level. Services returned 27.0% in that quarter12, and Citi's plan is for revenue to grow at a low-to-mid-single-digit rate while the return averages the mid-20s through the cycle13.

This is a wide moat on any measure a bank is judged by. What would narrow it is the return: Services RoTCE back below 20% for a full year with rates steady would mean the network had stopped pricing like one.

Moat trajectory: Widening

Services RoTCE 15.8% (2021) to 24.6% (2025) to 30.9% (Q2 2026).

The number that tests this moat
Reported
Services RoTCE, latest quarter
30.9% (Q2 2026) vs 24.6% for 2025

The return of the franchise; below 20% for a full year with rates steady would mean the network had stopped pricing like one.

Source: Citigroup Q2 2026 earnings release, institutional businesses ↗
Aspects of the moat
DIG DEEPER 01
$416 Billion Across Borders
Citi moves a rising stream of other companies' foreign-exchange payments, and the stream is the moat.
DIG DEEPER 02
Three Services, Fifteen Years
Citi's corporate clients have run their cash through it for fifteen years, and the wiring is what keeps them.
DIG DEEPER 03
Securities Services: $35 Trillion Held
Citi's custody arm holds trillions for other institutions, and clients almost never move trillions.
DIG DEEPER 04
Sixty-Nine Percent Outside America
Citi's moat is a map: most of what Services earns comes from countries where few American rivals can follow.
⚠ Threats to the moat
⚠ THREAT 01
Two-Thirds of Services Is a Spread on Deposits
Two-thirds of Services revenue is a spread on deposits, which is why its returns rose with interest rates.
⚠ THREAT 02
Paying 2.57% for Deposits
Citi pays about three-quarters of a point more for deposits than its biggest rivals, a gap worth about $10 billion a year.
References
  1. ReportedServices, which combines Treasury and Trade Solutions with Securities Services, earned $22,636 million of revenue and $8,187 million of income from continuing operations in 2025.
    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 ↗
  2. ReportedIts return on tangible common equity was 24.6%, against 7.7% for Citi as a whole, and 30.9% in the second quarter of 2026.
    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 ↗
  3. ReportedIts return on tangible common equity was 24.6%, against 7.7% for Citi as a whole, and 30.9% in the second quarter of 2026.
    Citigroup Form 10-K for fiscal 2025 - selected financial data: revenue, net income, EPS, RoTCE, efficiency ratio, deposits, capital ratios and requirements, repurchases and capital returned. — FY2021-FY2025 · publ. 20 February 2026 · source ↗
  4. ReportedIts return on tangible common equity was 24.6%, against 7.7% for Citi as a whole, and 30.9% in the second quarter of 2026.
    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 ↗
  5. ReportedTTS provides "cash management, payments and trade and working capital solutions", and Securities Services holds and settles investors' securities.
    Citigroup Form 10-K for fiscal 2025 - business description, segments, history, footprint, employees and executives. — FY2025 · publ. 20 February 2026 · source ↗
  6. ReportedCiti earns a spread on the deposits these clients leave with it and a fee for each transaction.
    Citigroup Form 10-K for fiscal 2025 - business description, segments, history, footprint, employees and executives. — FY2025 · publ. 20 February 2026 · source ↗
  7. ReportedServices RoTCE was 15.8% in 2021, 17.5% in 2022, 16.1% in 2023, 22.4% in 2024 and 24.6% in 2025, and its efficiency ratio fell from 61% to 48%.
    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 ↗
  8. ReportedRevenue rose from $12,539 million to $22,636 million in those years, about 81%.
    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 ↗
  9. Moat Explorer calcRevenue rose from $12,539 million to $22,636 million in those years, about 81%.
    Moat Explorer calculation from Citigroup segment figures ($ millions unless stated; calendar years; segments as restated in the 8-K of 3 April 2026). Services: cross-border transaction value 416.4 / 279.5 - 1 = 49.0%, about half; U.S. dollar clearing 177.1 / 146.2 - 1 = 21.1%; fee revenue 6,385 / 4,967 - 1 = 28.5%, about 29%; net interest income 15,001 / 6,866 = 2.18 times, about 2.2; NII share 15,001 / 22,636 = 66.3%, about 66%; revenue 22,636 / 12,539 - 1 = 80.5%, about 81%; TTS 16,646 / 9,187 - 1 = 81.2%; Securities Services 5,990 / 3,352 - 1 = 78.7%, about 79%; Securities Services revenue over assets under custody 5,990 / 31,400,000 = 0.019%, about 1.9 hundredths of a percent; international share 15,729 / 22,636 = 69.5%, about 69%; share of Citi revenue 22,636 / 85,225 = 26.6%, about 27% (2025), 12,539 / 71,574 = 17.5%, about 18% (2021). Deposits: year-end 1,308,681 / 1,365,954 - 1 = -4.2%, about 4%. U.S. Consumer Cards: revenue 18,258 / 13,209 - 1 = 38.2%, about 38%; net interest income over average loans 20,169 / 170,000 = 11.9%, about 12 cents per dollar; Q2 2026 net credit losses over net interest income 1,850 / 5,180 = 35.7%, about 36%, more than a third; share of Citi revenue 18,258 / 85,225 = 21.4%, about 21%. Markets: rates and currencies 11,749 / 22,409 = 52.4%, about 52%; fixed income 16,745 / 22,409 = 74.7%, about 75%; international 14,020 / 22,409 = 62.6%, about 63%; revenue 18,888 / 20,401 - 1 = -7.4%, about 7%; net income 4,059 / 6,148 - 1 = -34.0%, about a third; revenue 22,409 / 19,108 - 1 = 17.3%, about 17%; share of Citi revenue 22,409 / 85,225 = 26.3%, about 26%. Allocated average TCE 2025 ($bn): Services 33.0 + Markets 53.5 + Banking 9.2 + Wealth 15.4 + U.S. Consumer Cards 20.3 + All Other 39.2 = 170.6; Markets 53.5 / 170.6 = 31.4%, about 31%; All Other 39.2 / 170.6 = 23.0%, about 23%, nearly a quarter. Banking: corporate lending and other 6,384 - 4,618 = 1,766, about $1,766 million; share of Citi revenue 6,384 / 85,225 = 7.5%. Wealth: Citigold and Retail Banking 7,666 / 11,272 = 68.0%, about 68%; Wealth at Work 930 / 11,272 = 8.3%, about 8%; revenue 11,272 / 9,871 - 1 = 14.2%, about 14%; 11,272 / 9,733 - 1 = 15.8%, about 16%; share of Citi revenue 11,272 / 85,225 = 13.2%, about 13%. All Other: revenue on the chart basis 4,442 managed + (176) reconciling items = 4,266 (2025); 9,491 - 670 = 8,821 (2021); 8,841 + 854 = 9,695 (2022); 9,389 + 1,346 = 10,735 (2023); 7,521 + 26 = 7,547 (2024); Corporate/Other 4,442 - 5,512 Legacy Franchises = -1,070, about minus $1,070 million. Further: All Other chart basis 4,266 / 8,821 = 0.48, about half; Banking 2025 income new basis 935 / old basis 2,324 = 0.40, so 60% less, about three-fifths; Mexico consumer and small business 6,500 / 4,539 - 1 = 43.2%, about 43%; U.S. card loans 170 / 409 consumer loans = 41.6%, about two-fifths; card loans excluding the American Airlines purchase (177 - 168 - 6.6) / 168 = 1.4%; Q1 2026 card net credit losses over net interest income 1,742 / 5,116 = 34.0%, about 34%; Q2 2026 equities over fixed income 2,301 / 4,706 = 0.49, about half; investment banking fees 4,618 / 2,713 - 1 = 70.2%, about 70%; Citigold (old basis) 4,953 / 3,803 - 1 = 30.2%, about 30%; net new investment assets first half 2026 15 + 16 = 31 billion; Wealth Q2 2026 efficiency 2,377 / 3,177 = 74.8%, about 75%; Securities Services 5,990 / 5,165 - 1 = 16.0%, about 16%. More: commercial card spend 71.2 / 38.6 - 1 = 84.5%, about 84%; advisory share of investment banking fees 1,908 / 4,618 = 41.3%, about 41%; advisory share of Q2 2026 investment banking revenue 390 / 1,548 = 25.2%, about 25%; BlackRock mandate 80 / 670 investment assets = 11.9%, roughly 12%; rewards and partner payments over interchange 12,075 / 9,718 = 1.24 times; new card accounts 5,376 / 2,942 - 1 = 82.7%, about 83%. Five-business income from continuing operations 2025: 8,187 + 6,265 + 935 + 1,178 + 3,409 = 19,974; Services 8,187 / 19,974 = 41.0%, about 41%, more than two-fifths. — FY2021-Q2 2026 · publ. September 2026 · source ↗
    Method: Arithmetic on figures reported in Citigroup's recast historical supplement, Forms 10-K and 10-Q and its Q2 2026 earnings release; operands shown in the source line.
  10. ReportedIts average loans were $93 billion in 2025 and $103 billion in the second quarter of 2026, up 10% on a year earlier.
    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 ↗
  11. ReportedIts average loans were $93 billion in 2025 and $103 billion in the second quarter of 2026, up 10% on a year earlier.
    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 ↗
  12. ReportedServices returned 27.0% in that quarter, and Citi's plan is for revenue to grow at a low-to-mid-single-digit rate while the return averages the mid-20s through the cycle.
    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 ↗
  13. ReportedServices returned 27.0% in that quarter, and Citi's plan is for revenue to grow at a low-to-mid-single-digit rate while the return averages the mid-20s through the cycle.
    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 ↗
Sources
Generated September 28, 2026