The Cardano Foundation has been accepted into Mastercard's Crypto Partner Program, marking a new phase in the blockchain organization's efforts to drive mainstream adoption of cryptocurrency technologies in payments and settlement. The nonprofit that oversees the Cardano blockchain announced the move on September 15, 2026, placing itself in the program's Blockchains track, where participants focus on cross-border money movement, business-to-business transactions, and settlement solutions. According to reports from AMBCrypto, the partnership terms focus on developing and enhancing cross-border payments, business-to-business transactions, stablecoins, and settlement capabilities. This collaboration provides Cardano with a platform to work directly with Mastercard and industry peers to explore integrating public blockchain infrastructure with global finance systems. The Cardano Foundation described the collaboration as a key step toward making blockchain-based payments more accessible worldwide.
The Ouroboros Leios node has reached a significant performance milestone, achieving 250 TxkB/s in local cluster tests—equal to approximately 1,000 simple 250-byte transactions per second. This represents a substantial increase compared to Cardano mainnet's current maximum of 4.5 TxkB/s. Product manager Carlos Lopez de Lara at Input Output Global shared the test results with Sebastian Nagel, the Leios architect, using emulated round-trip times to provide higher fidelity. The test results were directly compared with the current mainnet figure, demonstrating the scale of the milestone achieved. However, the test was conducted on a local cluster, meaning tuning and optimization work remains necessary to carry these numbers into real internet conditions. Charles Hoskinson praised the potential of Leios and outlined expectations that the technology could reach Cardano's mainnet by the end of 2026, with the message clear that the throughput is there, while the remaining work involves getting those results to work under real-world network conditions.
According to Charles Hoskinson, RealFi is launching next month, representing a stablecoin-based lending and real-world finance initiative targeting banking the unbanked in Africa. The project has been in development for an extended period, with the team finally figuring out a route to make it happen. RealFi is described as bringing stablecoin-based lending and real-world finance to Cardano, adding another financial use case to the latest developments. This initiative aligns with the broader focus on payments and stablecoins in the Mastercard partnership, with stablecoins appearing in both the Mastercard collaboration and the RealFi plans. The three updates—Mastercard partnership, Ouroboros Leios performance milestone, and RealFi launch plans—cover different parts of the Cardano crypto story, with the Mastercard development focusing on payments, cross-border money movement, B2B transactions, and settlement, while Ouroboros Leios shows higher throughput in testing, and RealFi points to stablecoin-based lending and real-world finance applications.
Despite the strategic partnership announcement, Cardano faces significant structural challenges with transaction fees covering only 0.6% of staking rewards across the 73 five-day epochs ending September 1, 2026. The network generated 3.3 million ADA in transaction fees against 493.7 million ADA in staking rewards, with fees covering approximately 0.668% of rewards, leaving the reward pool roughly 149.6 times larger than fee revenue. Average daily transactions have declined 72.46% from 90,294 in 2022 to 24,869 between January and August 2026, turning the fee-versus-reward math into Cardano's most pressing structural question. The network's reserves stood at 6,126,859,027 ADA in epoch 655, equal to 13.62% of the 45 billion ADA maximum supply. Under Cardano's monetary policy, transaction fees and 0.3% of the remaining reserve flow into a virtual pot every epoch, with the treasury taking 20% and the rest available for staking rewards. The reserve is engineered to decay with a half-life of roughly four to five years, meaning emissions shrink naturally without requiring additional transactions.
The partnership does not indicate that Mastercard will use Cardano as a direct component of their payment platform. Instead, it creates avenues for collaboration and potential future use cases. Cardano's stablecoin market currently holds approximately $60 million, with at least $43 million comprised of USDCx, representing over 70% of total dollar-denominated assets available to users. The majority of activity stems from DeFi applications rather than real-world payments, which is problematic given Mastercard's focus on cross-border transfers, B2B payments, and settlement. However, the partnership enables Cardano to work directly with Mastercard to explore integrating public blockchain infrastructure with global finance systems, while the RealFi initiative specifically targets banking the unbanked population in Africa through stablecoin-based lending solutions. The gap between raw throughput and paying demand remains significant, with linear Leios designed for throughput above the simplified 43.1 TPS scenario, giving the network a plausible technical path to process far more volume than it does today.
