Knot and Venmo have switched on an integration that lets Venmo users set Venmo as their default payment method at merchants they already shop with, and the consequential detail is not the consumer convenience. It is that a wallet, rather than a card, now sits in the stored-credential slot. For two decades that slot has been governed by the card networks through Visa Account Updater and Mastercard Automatic Billing Updater. Knot has built a route around them.

Having watched card-on-file plumbing since Knot’s first tie-up with PayPal in 2025, I would call this the more consequential of the two deals. The earlier work kept a card on file current. This one replaces the card as the thing on file. Knot confirmed in its August 12, 2026 announcement that this is the first time it has provisioned a proprietary checkout solution as the default payment option rather than a card linked to an account.

How the Venmo default payment method works

From inside the Venmo app, users add Venmo as their saved payment method at participating merchants in a few taps, with no need to update details site by site. The mechanics vary by merchant, and that distinction matters more than the marketing suggests. At some merchants the Venmo account is linked directly so Pay with Venmo runs at checkout; at others the Venmo Debit Card — issued by The Bancorp Bank, N.A. under licence from Mastercard International Incorporated — is saved as the stored credential. Only the first path genuinely displaces the card rails. The second still terminates in a card number that will eventually expire.

Knot describes the move as extending the card-on-file capability behind its CardSwitcher product to a native wallet. Its wider suite includes TransactionLink, which returns SKU-level transaction data, and SubManager for subscription visibility. The Paypers reported on August 14 that the company works with banks, credit unions and growth-stage fintechs on card switching.

What rivals and the card networks do next

The competitive response is not coming from where most coverage is looking. Visa and Mastercard have no obvious counter, because their updater services — documented on Visa’s developer portal — are built to keep a card alive on file, not to contest whether a card is on file at all. Block is chasing the same slot from the other direction, unifying Cash App Pay with Afterpay so one wallet identity carries both checkout and instalment credit; it confirmed in an investor announcement that it extended pay-over-time into peer-to-peer transfers. Klarna revamped its membership tiers with richer cashback the same week — another play for frequency, following the distribution it bought through its framework deal across Worldline’s European merchant network. Merchants, the quiet beneficiaries, have said little publicly.

Venmo’s monetisation problem gives the deal its urgency

The timing is not accidental. Enrique Lores, President and Chief Executive Officer of PayPal since March 1, 2026, told analysts on the second-quarter call that the company is “evolving Venmo from a peer-to-peer payments app into a broader money management platform.” He also disclosed the number that explains this partnership: customers using both the Venmo Debit Card and Pay with Venmo generate more than nine times the average revenue of peer-to-peer-only users.

The figures support the push. In results published on July 28, 2026, PayPal reported Venmo total payment volume of $93.81 billion, up 14% year over year, against group total payment volume of $486.45 billion and net revenue of $8.68 billion. Chief Financial Officer Jamie Miller noted that Venmo volume growth marked the seventh consecutive quarter of double-digit expansion, while Venmo Debit Card monthly active accounts rose more than 50%.

A thinly funded company sitting on valuable rails

Knot remains small relative to its strategic position. It closed a $10 million Series A led by Nava Ventures, with Amex Ventures and Plaid participating — an investor list that reads as a strategic hedge by two incumbents. Chief Executive Rory O’Reilly said on Jason Mikula’s Fintech Business Podcast in May 2026 that Knot had passed 100 million application programming interface (API) calls per month and was expanding into Canada and Latin America.

That trajectory mirrors what Plaid and Finicity did in bank connectivity: start as a single-function utility, then become the layer everyone must integrate. TheIndustrySpread covered the original Knot and PayPal card-on-file arrangement in April 2025; the Venmo deal shows how far the remit has widened in 16 months. It lands while PayPal is under strategic pressure, having seen its board reject a $53 billion approach from Stripe and Advent.

Expect the template to be copied quickly, with wallets holding strong balances and weak checkout presence the obvious next counterparties. The strategic risk for Visa and Mastercard is not this deal but the precedent: if the stored credential becomes a wallet identifier rather than a primary account number, updater services lose relevance and the networks lose a data vantage point over recurring commerce. That is the same displacement fight running through agentic checkout, where Adyen has been positioning for the protocol war. The default payment method slot is where it gets settled first.

Rick Steves

Rick Steves has seen business and economics through many lenses. He joined the financial services industry in 2009, and has been a financial journalist since 2011. He holds a degree in Business Administration and has experience producing real-time news, from both buy-side and sell-side, as well as for retail traders, brokers and service providers. Steves' work has appeared in a variety of online publications including FX Street, NewsBTC, FinanceFeeds, and The Industry Spread. Rick has great interest in the dynamics of the trading industry. The never-ending clash between technology, economics, regulation, and more importantly, the people.