Teller

Teller

Real-time bank data API for developers

Overview

Teller provides a real-time bank data API for developers and businesses in fintech. It connects directly to banks via official APIs, avoiding slow, unreliable screen scraping to ensure faster, more accurate data retrieval. The product is accessed through a subscription-based API, where clients pay for a certain number of API calls per month and can scale usage as needed. Teller differentiates itself by offering direct bank integrations with high uptime and stable data, unlike competitors that rely on less stable methods. The goal is to deliver dependable, real-time banking data at scale to fintechs, financial institutions, and other businesses that need smooth integration with banking data.

About Teller

Simplify's Rating
Why Teller is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Data & Analytics

Enterprise Software

Fintech

Financial Services

Company Size

11-50

Company Stage

Seed

Total Funding

$4M

Headquarters

London, United Kingdom

Founded

2019

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Simplify's Take

What believers are saying

  • Teller's 2026 docs show active product maintenance and shipping velocity.
  • Instant payments using Zelle expand Teller beyond read-only bank data.
  • Production pricing on balances, transactions, and identity indicates clear monetization paths.

What critics are saying

  • Plaid still dominates fintech plumbing, and Teller's Sidecar proves switching pressure remains intense.
  • Teller depends on bank API access; partner withdrawals can break coverage overnight.
  • Same-day ACH microdeposits and beta institutions signal incomplete reach versus full-stack competitors.

What makes Teller unique

  • Teller connects through direct bank APIs, avoiding brittle screen-scraping and unstable aggregators.
  • Teller claims 7,000 financial institutions, plus Sidecar for Plaid migrations.
  • Teller offers live balances, transactions, identity, and payments in one API.

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Funding

Total Funding

$4M

Above

Industry Average

Funded Over

1 Rounds

Notable Investors:
Seed funding is usually the first official round after pre-seed, when a startup has a prototype or concept. It’s typically used to develop the product, test the market, and start building the team. Investors here are often angel investors or early-stage venture capitalists.
Seed Funding Comparison
Above Average

Industry standards

$3.3M
$2M
Netflix
$2.3M
Instacart
$3M
Robinhood
$4M
Teller

Benefits

Stock Options

Company Equity

Growth & Insights and Company News

Headcount

6 month growth

↑ 0%

1 year growth

↑ 0%

2 year growth

↑ 9%
Fintech Global
Jan 28th, 2020
Banking API company Teller announce new $4m seed round to take...

Venture capital Lightspeed Ventures, Founders Fund and PayPal founder Max Levchin's SciFi VC have joined forces to back banking API provider Teller’s new

TechCrunch
Jan 27th, 2020
Teller raises $4M to take on Plaid in the U.S. by providing API access to bank accounts

“They’re idiots, they’re really naive,” is how Stevie Graham, the co-founder of fintech Teller, once described Open Banking Limited, the body charged with delivering open banking in the U.K. His view back in 2017 — which now looks somewhat prophetic — was that open banking wouldn’t be the competition driver it was hyped up to […]

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