Block vs Fiserv: Revenue, Profit and Business Model
Block reported $24.2B of revenue in FY2025 and $1.3B of net income. Fiserv reported $21.2B of revenue in FY2025 and $3.5B of net income.
Latest financial snapshot
Financial summary
Block
Revenue was nearly flat in 2025, $24.19 billion against $24.12 billion, because bitcoin sales fell from $10.36 billion to $8.50 billion. Gross profit, which strips out the cost of the bitcoin Block resells, rose 17% to $10.36 billion and adjusted operating income rose 30% to about $2.3 billion. Net income attributable to common stockholders was $1.31 billion, down from $2.90 billion in 2024, a year lifted by a large fourth-quarter tax benefit. 2026 opened with a $308.7 million first-quarter net loss as layoff costs landed (about $495 million of restructuring charges across the first half), then second-quarter gross profit grew 25% to $3.17 billion with a record 27% adjusted operating margin. Block now guides to $12.51 billion of 2026 gross profit and $3.47 billion of adjusted operating income. It bought back $2.3 billion of stock in 2025, had $4.6 billion of repurchase authorization left at June 30, 2026, and pays no dividend.
Fiserv
Fiserv's revenue climbed from $5.8 billion in 2018 to $10.2 billion in 2019 after the First Data deal and reached $21.19 billion in 2025, with GAAP EPS of $6.34. Adjusted revenue was $19.8 billion in 2025 and free cash flow was $4.44 billion. The trajectory then turned: in Q2 2026 GAAP revenue fell 4% to $5.29 billion, GAAP EPS dropped 37% to $1.17 and adjusted EPS fell to $1.84, although free cash flow stayed at $1.1 billion for the quarter. Management now expects 2026 organic revenue between -1% and flat.
Revenue and profit by year
Block
| Year | Revenue | Net income | Margin | Growth | Source |
|---|---|---|---|---|---|
| FY2025 | $24.2B | $1.3B | 5.4% | +0.3% | Source |
| FY2024 | $24.1B | $2.9B | 12.0% | +10.1% | Source |
| FY2023 | $21.9B | $9.8M | 0.0% | +25.0% | Source |
| FY2022 | $17.5B | -$541M | -3.1% | -0.7% | Source |
| FY2021 | $17.7B | $166M | 0.9% | +85.9% | Source |
| FY2020 | $9.5B | $213M | 2.2% | +101.5% | Source |
| FY2019 | $4.7B | $375M | 8.0% | +42.9% | Source |
| FY2018 | $3.3B | -$38M | -1.2% | +49.0% | Source |
| FY2017 | $2.2B | -$63M | -2.8% | +29.5% | Source |
| FY2016 | $1.7B | -$172M | -10.1% | — | Source |
Fiserv
| Year | Revenue | Net income | Margin | Growth | Source |
|---|---|---|---|---|---|
| FY2025 | $21.2B | $3.5B | 16.4% | +3.6% | Source |
| FY2024 | $20.5B | $3.1B | 15.3% | +7.1% | Source |
| FY2023 | $19.1B | $3.1B | 16.1% | +7.6% | Source |
| FY2022 | $17.7B | $2.5B | 14.3% | +9.3% | Source |
| FY2021 | $16.2B | $1.3B | 8.2% | +9.3% | Source |
| FY2020 | $14.9B | $958M | 6.5% | +45.8% | Source |
| FY2019 | $10.2B | $893M | 8.8% | +74.9% | Source |
| FY2018 | $5.8B | $1.2B | 20.4% | +2.2% | Source |
| FY2017 | $5.7B | $1.2B | 21.9% | +3.5% | Source |
| FY2016 | $5.5B | $930M | 16.9% | — | Source |
Where the revenue comes from
Block
- Commerce enablement revenue47.6%
$11.51 billion in 2025: Square payment processing, software and hardware for sellers, plus Afterpay.
- Financial solutions revenue17.3%
$4.18 billion in 2025: Cash App Card interchange, instant transfer fees, Borrow and Square Loans, and banking products. It is the fastest-growing line and carries high margins.
- Bitcoin ecosystem revenue35.1%
$8.50 billion in 2025, down from $10.36 billion in 2024. Bitcoin sold to Cash App customers is booked at full value, so gross profit is small: $72 million in the second quarter of 2026.
Fiserv
- Merchant Solutions
About half of revenue
Card processing fees, Clover subscriptions and hardware, and enterprise/e-commerce acquiring. Segment GAAP revenue grew 5% in 2025 and fell 1% in Q2 2026.
- Financial Solutions
About half of revenue
Core account processing, digital banking, card issuing and processing, bill pay and Accel debit network fees. Segment GAAP revenue grew 2% in 2025 and fell 8% in Q2 2026.
Business model and strategy
Block
How it makes money
Block runs a two-sided network. On the seller side, Square charges a fee on each card payment (in the U.S. on its free plan, 2.6% plus 15 cents in person and 3.3% plus 30 cents online) and adds paid software, hardware, payroll, banking and Square Loans. On the consumer side, basic Cash App transfers are free;
Growth strategy
Block's 2026 plan has four parts. Square is selling to larger and international sellers through a field sales team and independent sales organization partners; international GPV grew 28% in the second quarter of 2026. Cash App wants to be the main bank account for people with several income sources, using direct deposit and Cash App Green rewards status;
Competitive advantage
Block's advantage is owning both ends of many small transactions. Cash App's peer-to-peer network spreads by itself, since receiving money means downloading the app, and every added product (the Cash App Card, direct deposit, Borrow, Afterpay) raises revenue per customer without new acquisition cost.
Fiserv
How it makes money
Fiserv earns mostly recurring, volume-based fees from two customer groups. Merchant Solutions charges merchants processing fees on card transactions, plus subscription and hardware revenue from Clover terminals and software, and fees from larger enterprise and e-commerce clients.
Growth strategy
Under the 'One Fiserv' plan launched in late 2025, management is reinvesting in technology, putting Clover at the center of its merchant strategy, adding AI and value-added services for banks, and simplifying the product portfolio.
Competitive advantage
Fiserv's main advantage is switching cost. Moving a bank's core ledger to a new vendor is a multi-year, high-risk project, so core banking clients rarely leave. Fiserv also sits on both sides of many transactions: it processes for card-issuing banks and for the merchants accepting those cards, and many of its bank clients refer local businesses to Clover.
Questions about Block vs Fiserv
Which company has higher revenue — Block Inc or Fiserv, Inc.?
Block Inc reported $24.2B (FY2025), while Fiserv, Inc. reported $21.2B (FY2025). By last reported revenue, Block Inc is the larger business, with Fiserv, Inc. reporting a smaller revenue base.
What is the market cap of Block Inc vs Fiserv, Inc.?
Block Inc's market capitalisation stands at $44.5B, while Fiserv, Inc.'s is $25.0B. Block Inc carries the higher market valuation, reflecting investors' expectations of its future earnings power relative to Fiserv, Inc..
Which is more financially efficient — Block Inc or Fiserv, Inc.?
Block Inc generates $2.37M / employee in revenue per employee, while Fiserv, Inc. generates $558k / employee. Block Inc shows higher revenue efficiency per headcount, though this reflects business model differences — capital-light software companies routinely outperform labour-intensive manufacturers on this metric.
How do Block Inc and Fiserv, Inc. make money?
Block Inc and Fiserv, Inc. generate revenue in fundamentally different ways. Block Inc: Block runs a two-sided network. Fiserv, Inc.: Fiserv earns mostly recurring, volume-based fees from two customer groups.
Which company is valued higher relative to revenue — Block Inc or Fiserv, Inc.?
On a price-to-sales (P/S) basis, Block Inc trades at 1.8x P/S and Fiserv, Inc. at 1.2x P/S. Block Inc commands a higher revenue multiple, typically indicating that investors expect faster growth or higher future margins compared to Fiserv, Inc.. A higher multiple is not inherently better — it may also signal that the stock is priced for perfection.
Is Block Inc bigger than Fiserv, Inc.?
By last reported revenue, Block Inc ($24.2B (FY2025)) is the larger company compared to Fiserv, Inc. ($21.2B (FY2025)). Revenue scale is one dimension of size — market capitalisation, employee count, and geographic reach are also relevant depending on the context.
Figures come from each company's filings and the sources linked beside them. Amounts reported in another currency are shown in US dollars at an approximate rate and marked with ~. Back to the Block vs Fiserv overview