Three paths to fair value, all of which arrive at roughly the same answer.
The DCF path. FY25 FCF of $21.6 billion, growing at 12% for five years and fading to 6% terminal, discounted at 8.5%, produces an equity value of approximately $810 billion, or $430 per share.
The relative multiple path. Mastercard trades at 26.6x forward earnings. Visa trades at 24.6x forward. Apply parity, and Visa fair value is $337. Apply a slight premium for Visa's scale advantage (larger global footprint, higher cross-border share), and $355-370 is the right answer.
The FCF yield path. At a 4% FCF yield, fair market cap is $540 billion, or $285 per share. That is the conservative floor; it assumes Visa is a no-growth utility, which the 13.5% revenue CAGR manifestly disproves. At a more appropriate 3% yield for a mid-teens growth business, fair value is $720 billion, or $380 per share.
Blend the three and fair value sits at $420. The current price implies a business growing at GDP. The actual business is growing at three times GDP with expanding margins. That is the mispricing. Visa is a buy below $320, and we see limited downside to the thesis unless operating margins compress by 500 basis points, which the last four cycles have not produced.