Every processor.
Graded on evidence.

ProMerchant

Agent Office / Reseller

B-

ProMerchant is a small merchant-services company in Woburn, Massachusetts, started in May 2018, that sells card acceptance to US restaurants, retailers, mobile traders, phone-order and e-commerce businesses, and places harder-to-approve merchants — CBD, vape, supplements, firearms, credit repair, telemarketing and dozens of others on its published list — with what it says are twelve different high-risk processors. Its pitch is the terms rather than the rate: month-to-month agreements with no early-termination fee, no setup or application fee, a free terminal placement programme, and a choice between interchange-plus pricing with a fixed markup and a zero-cost surcharge plan for retail and restaurant merchants. It publishes no numbers; third-party reviewers report quotes starting around interchange plus 0.50% and $0.15 per transaction and $0.30 per virtual-terminal transaction. Funding is next day for batches settled by 8:30pm Eastern and otherwise two business days. It holds an A+ from the Better Business Bureau, accredited since November 2018 with seven complaints in three years, and a 4.3 on Trustpilot from 258 reviews — though only a couple of those are from the last year, and a run of mid-2024 reviews describe months of unanswered calls that ProMerchant attributed to a restructuring at a parent company unrelated to payments. With about 15 staff and no disclosed sponsor bank or processor, it is an agent office: your contract, reserve and funding terms come from whichever processor it places you with.

Gumroad

Merchant of Record

C+

Gumroad is a storefront and checkout for people selling digital products — e-books, courses, software, memberships, design assets — founded in San Francisco in 2011 by Sahil Lavingia and, since 1 January 2025, the merchant of record on every sale, which means it charges, collects and remits sales tax, VAT and GST worldwide and handles disputes with buyers. It says creators have earned more than $1 billion through it, and in April 2025 it published its entire codebase under an MIT licence. Lavingia stepped down as chief executive in November 2025 after 14 years, handing over to long-time engineer Ershad Kunnakkadan. The price of the simplicity is high: 10% plus $0.50 on every direct sale, plus card processing at 2.9% plus $0.30, and a flat 30% on sales that come through Gumroad's Discover marketplace; only sellers passing $20,000 in a calendar month drop to 5% plus $0.50. There is no monthly fee, refunds return Gumroad's share, and chargebacks cost the creator the sale and the processing fee but no penalty. Payouts are weekly on a fixed weekday by country, after a seven-day hold, and — since a change creators noticed in March 2026 — only once the balance reaches $100. Public reviews are poor: the Trustpilot profile scores 1.4 from about 415 reviews, most of them about held or missing payouts and support that is hard to reach.

Pricing clarity

4.0

Feature set

3.5

Ease of use

4.5

Barclaycard Payments

Platform / Acquirer

B-

Barclaycard Payments is the merchant-acquiring arm of Barclays Bank PLC, the business that has signed UK shops up to take cards since Barclaycard launched the country's first credit card on 29 June 1966 and installed the UK's first electronic point-of-sale terminal in 1986. It is one of the largest acquirers in the UK — the company says it processed more than nine billion card payments in 2025 for more than 160,000 businesses, settling in 18 currencies and accepting 118 — and it is in the middle of the biggest change in its history: in April 2025 Barclays agreed a partnership under which Brookfield Asset Management will help run the business as a standalone company, Barclays will put in about £400 million, and Brookfield can buy a majority stake from year three. A new chief executive, Jason Lalor, formerly of Mastercard, Conferma and Square, started in January 2026. For merchants the offer splits in two. Small businesses get Smartpay Anywhere, a £29 + VAT pocket reader with no contract and no monthly fee, or Smartpay Touch, a £29 + VAT-a-month Android terminal on a 12-month term with no exit fee; both settle next working day for sales taken before 7pm. Traditional countertop and portable terminals come on 18-month contracts at £16 or £18 + VAT a month after a free first year, with an exit fee if you leave early. Barclaycard publishes no rate card — every account is priced on turnover, with representative examples of 0.7% + 3p on an in-person debit card and 2.05% + 3p on a keyed credit card — and its service reputation is the weak point: the only Trustpilot profile blends consumer-card and merchant reviews and is dominated by complaints about reaching a person.

Tyro

Platform / Acquirer

B+

Tyro Payments Limited is a Sydney-based merchant acquirer and bank, founded in 2003, granted a specialist credit card institution licence in 2005 and a full Australian banking licence in 2015, and listed on the ASX as TYR since 2019. It serves more than 77,800 Australian merchants, processed $44.3 billion in transaction value in the year to June 2026, and reported gross profit of $231.8 million, EBITDA of $66.9 million and statutory profit before tax of $22.3 million for that year. Its pricing is published and flat: 1.3% including GST on every card transaction for businesses under $20,000 a month, a custom quote above that, and a Pro Touch or Pro Key terminal at $29 a month, a Pro Lite at $19, or a Tap to Pay app on your own phone for nothing — with no lock-in contract, no joining fee and no break fee. New customers transacting more than $20,000 a month who join before 24 November 2026 get 1% until 31 March 2027. Takings settle seven days a week, the same day, into a fee-free Tyro Transaction Account protected by the Financial Claims Scheme, or next business day to an outside bank. Tyro integrates with more than 580 POS and practice-management systems, routes debit through the cheapest network with Tap & Save, and lends up to $400,000 against card takings. The record has one scar: a January 2021 terminal outage that left some merchants unable to take cards for weeks and produced a Federal Court class action that Tyro settled in principle in February 2023 without admitting liability. Nigel Lee became chief executive in January 2026, and Tyro's Australian Trustpilot profile is 4.2 from about 560 reviews, 69% five-star and 20% one-star.

Flywire

Platform / Acquirer

B

Flywire is a Boston-headquartered payments platform, incorporated in July 2009 as peerTransfer to move international tuition money and renamed Flywire in 2016, that now collects large, often cross-border receivables for about 5,300 clients in education, healthcare, travel and B2B — more than 3,300 educational institutions, more than 150 healthcare systems and roughly 1,800 travel and business clients. It listed on Nasdaq as FLYW in May 2021, processed $37.6 billion in total payment volume in 2025 on revenue of $623 million and net income of $13.5 million, and has bought its way into new verticals: Simplee (healthcare, 2020), WPM (UK universities, 2021), Cohort Go (2022), StudyLink (Australian admissions, 2023), Invoiced (B2B receivables, 2024) and Sertifi (hotel payments, $330 million, February 2025). Clients sign negotiated agreements and Flywire publishes no rate card; its revenue is a percentage of each payment that varies by payment method, currency pair and region, plus fixed fees on domestic transactions, and the payer sees the total, including any Flywire fee and the currency conversion, before confirming. Its subsidiary Flywire Global Corp. holds money-transmitter licences in 46 US jurisdictions. Two things temper the picture: a securities class action, Hickman v. Flywire, has been pending in the Eastern District of New York since July 2025 over how the company described the effect of student-visa policy on its growth, and Flywire has voluntarily reported apparent sanctions violations to OFAC after an internal review. Its Trustpilot score is 4.0 from about 3,150 reviews, mostly written by students and patients paying through it rather than the institutions that choose it.

Pricing clarity

2.0

Feature set

4.5

Ease of use

4.0

Teya

Platform / Acquirer

B

Teya is a London-headquartered payments and business-banking company founded in 2019 as SaltPay by Ali Mazanderani and Eduardo Pontes, renamed in April 2023, and backed by investors including Tiger Global, Ribbit Capital and Michael Spencer — total funding is reported at about $845 million by data providers and $1.1 billion by The Business of Payments. It grew by acquisition — Iceland's Borgun in 2020, the UK's RMS Group in 2022 and the Czech ePOS company Storyous among them — and now sells to small businesses in nine European markets, the UK, Croatia, Czechia, Hungary, Iceland, Italy, Portugal, Slovakia and Spain, with Spain and Italy launched commercially in February 2026. In the UK the offer is a Teya Pro or Teya Lite card machine from £14.99 a month with a lifetime warranty, Tap to Pay on iPhone and Android, online payments, and a free e-money Business Account that card takings settle into next working day as standard, every day including weekends and bank holidays as an option, or in seconds with Instant Settlements. Rates are quoted rather than published — the pricing page says there is no standard price list, the card-machine page says fees start at 1.59% — and using an outside bank account instead of Teya's adds 0.10% to every transaction. Teya Solutions Ltd is an electronic money institution authorised by the Financial Conduct Authority (reference 978181), so the account is safeguarded rather than FSCS-protected. Its UK Trustpilot profile is 4.4 from about 1,500 reviews, 82% five-star and 15% one-star, and the one-star reviews are about held funds and unreturned calls.

myPOS

Platform / Acquirer

B

myPOS is a London-headquartered payments company founded in 2012 by Christo Georgiev and owned since February 2024 by the private-equity firm Advent International in a deal reported at around €500 million, after which the founder exited and Mario Shiliashki, formerly of Mastercard and PayPal, became chief executive. It sells card machines outright — the myPOS Go 2 at £39, Flex at £59, Go Combo at £169 and Ultra at £179, all excluding VAT — with no monthly fee, and settles every card payment instantly into a free myPOS e-money business account with a Mastercard business card, a model it says it pioneered in 2014. The UK rate card is published for businesses under £10,000 a month: 1.10% + 7p on domestic consumer cards, 2.20% + 7p on EEA consumer cards, 2.45% + 7p on American Express and 2.85% + 7p on everything else in person, and 1.30% + 15p domestic, 2.50% + 15p Amex and 2.90% + 15p other cards online; larger businesses get a custom quote. UK, Gibraltar and Swiss services are provided by myPOS Payments Ltd, an electronic money institution authorised by the Financial Conduct Authority (reference 900826), and the group says it serves more than 400,000 merchants in over 30 countries with 15 physical stores, up from the 170,000 small businesses Reuters reported when the sale was agreed. Its Trustpilot profile is 4.2 from nearly 22,000 reviews, 70% five-star and 13% one-star, and the one-star reviews are about unexplained application rejections, slow deliveries and support that is hard to reach.

CDGcommerce

ISO

B+

CDGcommerce is a family-owned merchant services provider founded in 1998 by Chris and Laura West and based in Port Orange, Florida, operating as a registered ISO/MSP of Pinnacle Bank (dba Synovus Bank) and Citizens Bank, N.A. It is unusual among independent sales organisations for publishing its entire rate card: a flat-rate plan at 2.90% + $0.30 in person and 3.50% + $0.30 online with a $9.95 monthly fee, an interchange-plus plan at interchange + 0.30% + $0.10 retail, + 0.35% + $0.15 online and + 0.25% + $0.10 for non-profits, and a wholesale membership at $49 to $199 a month paid annually with per-transaction cents from 15¢ down to 6¢. Its own Quantum gateway and virtual terminal are free, there are no PCI, annual, statement or gateway fees, and — in the company's words — in more than twenty years it has never required a contract length or termination fee. It holds an A+ rating and BBB accreditation since 2020 with two complaints closed in three years, and it makes no attempt to serve merchants outside the United States or in adult, cannabis or telemarketing categories. The weaknesses are the ones that come with a small shop: a thin self-service knowledge base, a Dejavoo terminal that carries a $79-a-year update charge, and third-party reports of funding holds and terminations on riskier accounts.

Zeller

Platform / Acquirer

B+

Zeller is a Melbourne payments and business-banking company founded in 2020 by Ben Pfisterer, who had led Square's Asia-Pacific team, and Dominic Yap, and launched in May 2021. It sells an EFTPOS terminal outright — the Zeller Terminal 1x and the newer Zeller Terminal 2, both listed at A$99 on promotion in September 2026 — with no monthly rental, no lock-in contract and a flat 1.4% on every in-person card, American Express included, falling to 1.2% when payments run through its free Zeller POS software. Every merchant gets a Zeller Transaction Account and debit card at no cost, with card takings settled into it nightly and available the next business day at an outside bank. It also offers invoices, a virtual terminal, Tap to Pay on iPhone and Android, corporate expense cards and, from April 2026, a UK operation priced at 1.3% on domestic Visa and Mastercard. The company reached a valuation above A$1 billion ten months after launch on the back of a A$100 million Series B in March 2022 and says more than 100,000 Australian businesses use it. Zeller Australia Pty Ltd holds an Australian financial services licence and is a principal member of Mastercard; merchant funds are held in a segregated account at Cuscal rather than in a bank deposit. The pricing is among the simplest in the Australian market and the hardware is well regarded; the recurring complaint is the one every fintech acquirer attracts — funds frozen pending documents, with slow answers.