DTMF can remove card data from the contact centre environment, yet it is rarely the right long-term strategy for business telephone payments. The technology does a reasonable job of keeping card numbers away from agents, screens and call recordings, and for years that was enough.
The question worth asking in 2026 is different: does the payment technology move the business forward commercially, operationally and on fraud protection? Measured against that, DTMF falls short, and the reason sits one layer beneath PCI compliance.
This article looks at why DTMF telephone payments remain tied to legacy MOTO processing, what that costs a business in fees and fraud exposure, and why SOTpay and Securafone are a stronger strategic fit. If you want the customer experience and channel comparison instead, our companion piece on DTMF vs Pay by Link covers that ground.
Traditional DTMF telephone payment systems are built around legacy technology. They can prevent staff from hearing, seeing or handling card details, which helps with PCI scope. The payment journey behind the keypad, though, still typically remains a MOTO transaction: Mail Order / Telephone Order.
That distinction carries real weight. MOTO is a card-not-present transaction type designed for an era of phone and postal orders, and it behaves very differently from a modern e-commerce payment once you look at authentication, liability and cost.
MOTO payments do not benefit from the customer authentication protections available through modern e-commerce journeys, most importantly 3D Secure. Phone payments sit outside Strong Customer Authentication, so 3D Secure does not run during a voice call. The consequence is direct: with no 3DS authentication there is no liability shift, so when a phone payment turns out to be fraudulent, the merchant almost always carries the cost.
That single fact shapes everything downstream:
MOTO transactions are generally more expensive to process than e-commerce transactions, and the card schemes are steadily increasing the pressure on legacy flows. Mastercard now charges its MOTO fee on all authorisations, including declined ones, rather than only on cleared transactions, a change that took effect at the start of 2026. Visa, meanwhile, is rolling out a Digital Commerce Services Fee across all card-not-present transactions through 2026 and continues to reward merchants who submit richer, authenticated data with better rates.
The message from the schemes and acquiring banks is consistent. They want merchants to move away from outdated MOTO payment flows and adopt secure, authenticated digital journeys. Businesses that modernise can benefit from lower transaction fees, stronger fraud protection and better customer experiences. Businesses that stay on legacy MOTO flows are likely to see higher processing costs, and those costs are expected to keep climbing until the move is made.
There is an implementation cost angle too. Setting up modern digital payment technology is generally far cheaper than installing and maintaining a traditional DTMF platform, which relies on specialist telephony infrastructure and secure environments that have to be paid for and managed long after go-live.
This is the point where SOTpay and Securafone change the picture. Because the technology is digital and built around how customers now expect to pay, the business is no longer restricted to keypad-based DTMF telephone payments.
Customers can complete secure payments through modern journeys that support e-commerce merchant IDs and 3D Secure, which brings the authentication and liability protection that MOTO cannot offer. The same platform extends across the channels a business actually uses:
Moving the transaction onto an e-commerce merchant ID with 3D Secure is the structural fix. It addresses the fee direction, the fraud exposure and the chargeback liability in one move, rather than masking card data while leaving the underlying MOTO risk in place.
This matters more than ever in a market where cyber threats keep rising and customers need to trust a payment journey before they are willing to complete it. A branded, secure and familiar digital payment experience helps build that trust, where an unbranded keypad prompt during a phone call does little to reassure a wary customer.
The combined result is stronger fraud protection, a better customer experience, reduced PCI exposure, improved operational efficiency and lower transaction costs. In many cases SOTpay and Securafone also come in at a fraction of the cost of legacy DTMF-based platforms.
Crucially, SOTpay provides a 100% guarantee against fraud-related chargebacks. For a business moving away from MOTO telephone processing, that removes the single biggest worry about the transition and gives merchants complete confidence in the move.
Where a business still needs to take occasional phone payments, the controls that matter are the ones a merchant can directly influence: keeping card data out of call recordings, CRM systems and agent screens, alongside sound fraud prevention practice. SOTpay is built to keep sensitive data out of the contact centre entirely while routing the customer into an authenticated digital journey wherever possible.
The fastest way to understand the difference is to see it against your current setup. We have enterprise-level presentations prepared, and the comparison tends to be a real eye-opener once the MOTO fees and chargeback exposure are laid out side by side. Book a no obligation demonstration, or start with a free payments review to see exactly where your current telephone payment flow is costing you.
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