The global payments landscape is being reshaped by BNPL growth trends, as consumers shift away from traditional credit cards toward flexible, transparent financing options. In this evolving environment, both Mastercard (NYSE:MA) and Affirm (NASDAQ:AFRM) are positioning themselves to benefit — but their paths look very different. One brings stability and scale, the other brings speed and disruption. Here’s how they stack up for investors seeking clarity on which stock offers more upside.

Mastercard: Stability With Strategic BNPL Expansion

Mastercard has long been a pillar of the global payments industry. With a massive market cap and established network, MA connects consumers, banks, merchants, digital partners and financial institutions worldwide. While BNPL startups are building new ecosystems, Mastercard is integrating BNPL within its existing infrastructure through its Mastercard Installments program.

In the third quarter of 2025, the company saw net revenue rise 17% year over year, supported by robust cross-border spending, rising volumes and increased demand for value-added services. Mastercard has also outperformed earnings expectations in each of the last four quarters.

Another pillar of its long-term strategy is innovation. Mastercard continues to invest in tokenization, open banking, digital identity, real-time payments and AI-driven fraud prevention. These initiatives deepen its relevance at a time when alternative payment solutions are gaining traction.

However, rising operating expenses — up 15% in the latest quarter — and a long-term debt-to-capital ratio of 70.6% may act as constraints. Even so, with $10.4 billion in cash and no short-term debt, the company remains financially solid, supported by strong buybacks and dividends.

For investors seeking stability during rapid BNPL growth trends, Mastercard offers durable long-term value with moderate upside.

Affirm: Velocity in a Rapidly Expanding BNPL Market

Affirm has emerged as a dominant force in BNPL by focusing on transparency, predictable payments and strong merchant integrations. Unlike credit cards, Affirm avoids late fees, compounding interest and hidden charges — a model that strongly resonates with younger consumers.

What truly sets Affirm apart is its ecosystem scale. As of Q1 fiscal 2026, the company serves 24.1 million active users and 419,000 merchants. Partnerships with Amazon, Shopify, Apple Pay and Williams-Sonoma have supercharged adoption and GMV expansion.

Affirm’s growth numbers highlight the strength of these BNPL growth trends. In the most recent quarter, revenue climbed 34% year over year, GMV rose 42% and network revenues grew 38%. These gains were fueled by strong point-of-sale integrations, wallet partnerships and rapid adoption of the Affirm Card.

AI is a major driver of Affirm’s success. The company uses machine learning for underwriting, real-time risk assessments and customer-support automation, enabling more precise approvals and profitable scaling.

Still, Affirm faces challenges, including rising operating expenses, higher funding costs and ongoing credit-loss provisions. Despite this, it has exceeded earnings expectations by an average of 129% across the past four quarters — a sign of strong operating momentum.

Which Stock Has More Upside?

Current estimates favor Affirm. The company’s fiscal 2026 revenue and EPS outlook vastly outpaces Mastercard’s, reflecting explosive BNPL-driven growth. Affirm also trades at a lower price-to-sales multiple (5.11x versus Mastercard’s 13.46x), giving it a more attractive valuation relative to its expansion trajectory.

Analyst price targets reinforce this. Mastercard offers about 21% upside from current levels, while Affirm’s target suggests nearly 38% potential gains.

Conclusion: Affirm Leads the Next Wave of BNPL Growth Trends

Both companies are strong performers, but for investors focused on high-velocity growth, Affirm stands out. Its expanding ecosystem, AI-enabled underwriting and deep merchant integrations place it at the center of accelerating BNPL growth trends. Mastercard remains a reliable, long-term compounder, but Affirm’s disruptive momentum offers the more compelling upside opportunity today.