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Stark Bank

API-driven corporate banking and payments platform

Overview

Stark Bank is a Brazilian digital bank that provides API-driven financial infrastructure for mid-to-large enterprises and high-growth tech companies. Its platform includes corporate digital accounts, payment processing for online sales, automated recurring charges, bill payments, and receivables management via Pix and Boleto, along with corporate cards and sizable credit lines. The API-first approach lets clients integrate banking functions into their own systems to automate high-volume transactions and cash flow management, differentiating Stark Bank from peers with deeper credit facilities and a broader focus that includes Brazil’s crypto and blockchain firms. The company aims to become the backbone of enterprise financial operations in Brazil by enabling scalable, automated banking services for payments, receivables, and treasury functions.

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About Stark Bank

Simplify's Rating
Why Stark Bank is rated
C+
Rated B on Competitive Edge
Rated B on Growth Potential
Rated D+ on Differentiation

Industries

Enterprise SoftwareFintechFinancial Services

Company Size

51-200

Company Stage

Series B

Total Funding

$60.9M

Headquarters

São Paulo, Brazil

Founded

2018

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Simplify's Take

What believers are saying

  • Stark Event on 2026-06-16 launched ARC, an AI agent for banking automation.
  • The same event introduced Stark Digital Assets, opening a new revenue line.
  • May 2026 hiring added Payments, Acquiring, Cybersecurity, AML, and customer success roles in São Paulo.

What critics are saying

  • MP-GO opened a 2026-08-25 investigation into Pequi Bank, Stark Bank's Goiás partnership.
  • Senate CPIs questioned Rafael Stark in 2024 and 2026 over betting-linked payment flows.
  • Any PIX compliance crackdown would freeze transaction volume and wreck the 2029 IPO path.

What makes Stark Bank unique

  • API-first banking automates Pix, Boleto, and recurring charges for enterprise finance teams.
  • Rafael Stark built Stark Bank for medium-large companies ignored by branch-heavy corporate banks.
  • Its engineering-heavy model supports customized credit, controls, and workflow integrations for clients like Ambev.

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Funding

Total Funding

$60.9M

Meets

Industry Average

Funded Over

6 Rounds

Notable Investors:
Series B funding is typically for startups that have proven their business model and need more funding to expand rapidly—often by entering new markets or adding more products. Investors are usually venture capital firms that specialize in later-stage investments.
Series B Funding Comparison
Above Average

Industry standards

$35M
$45M
$45M
$65M
$100M

Benefits

Health Insurance

Dental Insurance

Wellness Program

Meal Benefits

Commuter Benefits

Growth & Insights and Company News

Headcount

6 month growth

3%

1 year growth

0%

2 year growth

2%
PYMNTS
Mar 13th, 2025
Why Cfos Considering Stablecoins And Crypto Need A Cybersecurity Strategy

Another day, another push by cryptocurrency into mainstream financial services. BNY is reportedly handling additional services for the USDC stablecoin issuer Circle, while in Brazil, online-only bank Stark Bank is reportedly aiming to serve the country’s crypto startups. From Block and Strategy’s high-profile bitcoin holdings to small businesses testing stablecoin transactions, cryptocurrency is weaving its way into corporate finance, with digital assets now being integrated into corporate treasury strategies, cross-border transactions and payment processing

PYMNTS
Mar 12th, 2025
Stark Bank Sees Opportunity To Serve Brazil’S Crypto Startups

Brazilian online-only bank Stark Bank reportedly aims to serve the country’s cryptocurrency startups. The company sees an opportunity to position itself as a banking provider for these startups at a time when the crypto sector is still shunned by traditional lenders but is becoming more attractive due to U.S. President Donald Trump’s support for crypto, Bloomberg reported Wednesday (March 12). “The technology is here to stay, and our idea is to target that niche,” Stark Bank CEO Rafael Stark said, per the report

PYMNTS
Feb 19th, 2024
Bezos-Backed Stark Bank Tripled Payments Processed In 2023

Stark Bank, a growing FinTech startup based in Sao Paulo, Brazil, reportedly caught the attention of investors including Jeff Bezos’ family office, Bezos Expeditions, which participated in the firm’s 2022 Series B round.The company is one of the few Latin American startups backed by Bezos, Bloomberg reported Monday (Feb. 19).In 2023, Stark Bank processed 155 billion reais (about $31 billion) in payments, marking a three-fold increase from the previous year, founder Rafael Stark told Bloomberg. The company also saw its net income more than double to 71.5 million reais (about $14.4 billion).With a growing list of 600 clients that include well-known companies like Gol Linhas Aereas Inteligentes SA, Localiza Rent a Car SA and Cia Ultragaz SA, Stark Bank aims to capture market share from traditional corporate banks in Brazil, according to the report.Stark emphasized the company’s commitment to profitability, noting that while many tech companies focus on raising money, Stark Bank prioritizes creating value for its stakeholders, the report said. The firm’s success has been attributed to its ability to streamline payment processing, invoicing and receivables for its clients, allowing them to automate tasks and increase efficiency.Stark Bank also has customization and engineering expertise, with 30% of its employees being engineers, per the report. Despite not holding a formal banking license, Stark Bank has carved out a niche in the FinTech industry by offering tailored solutions to its clients.Looking ahead, Stark Bank has plans for an initial public offering around 2029, the report said. Stark has set his sights on expanding the company’s reach within Brazil, particularly in Sao Paulo where most of the country’s major firms are located.When reporting in 2022 that it received $45 million in a Series B funding round that included support from Bezos, Stark said the transaction would allow Stark Bank to increase its products portfolio.PYMNTS Intelligence found that merchants in Brazil are offering a growing number of digital features to deliver frictionless and satisfying shopping experiences.The country’s national instant payment system, Pix, is gaining traction and contributing to consumers’ digital shopping experience, according to the PYMNTS Intelligence report “2023 Global Digital Shopping Index.”

LABS - Latin America Business Stories
Dec 6th, 2023
Brazilian fintech Stark Bank spins up $13 million with Lachy Groom

The solo-VC-led round will back the expansion of financial products focused on large enterprise accounts. Read on LABS.

Retail Banker International
Apr 12th, 2022
Ribbit Capital invests into Stark Bank in $45M

Brazilian fintech startup Stark Bank has raised $45m in its Series B funding round led by Ribbit Capital, media reports said.

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