Are you a growth-focused investor looking for the best place to put your available or unused Tax-Free Savings Account (TFSA) contribution room? Three TSX stocks, all capital compounders, are viable options.
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Tech superstar
Shopify (TSX: SHOP) is a must-own in a TFSA portfolio despite its subpar performance in 2026. SHOP is down 18.8% year-to-date but has surged 11.5% over the past month. The current share price is $179.19. The technology sector has been doing the heavy lifting for the TSX lately, advancing 18.4% in the last 30 days.
Market analysts recommend a buy rating. The bull sentiment stems from the strong 31% revenue growth in Q4 2025 and 11 consecutive quarters of 25% or more revenue growth. For the year, operating income and free cash flow (FCF) increased 37% and 26% year-over-year to US$1.5 billion and US$2 billion, respectively.
Shopify will also launch a Board-approved share repurchase program of up to $2 billion. Harley Finkelstein, President of Shopify, said, “2026 will be the year of the builders, and we’ll be powering them – from first sale to full scale.”
The $241 billion commerce company’s growth engines include agentic commerce, B2B and international expansion, and strategic AI tools.
Silver to gold
Discovery Silver (TSX: DSV) is a newly transformed gold producer following a major acquisition in April 2025. It acquired the Porcupine Complex in Ontario. While this $8.5 billion Canadian mining company still owns the large underdeveloped Cordero silver project in Mexico, it rebranded into a gold-focused entity.
The mining stock delivered an astounding 1,008% return in 2025. Interestingly, Discovery Silver did not generate revenue or earnings from mine operations in the full-year 2024 or Q1 2025. Still, net earnings in 2025 reached $106.8 million compared with $15.2 million net loss in the previous year.
Porcupine Complex is the most prolific mining site in Canada. It hosts three mine properties, a Dome mine property, and a milling facility. There are also several near-mine and regional exploration targets. Discovery Silver expects to operate at full capacity by 2027 or earlier.
DSV currently trades at $9.73 per share, with a total three-year return of plus-754%. Had you invested $6,000 three years ago, it would be worth $51,210.53 today.
High-flyer
MDA Space (TSX: MDA) continues to impress as one of TSX’s top-performing growth stocks. In the 2025 TSX30 annual ranking, the aerospace stock ranked 15th. At $46.21 per share, MDA is up 73.5% year-to-date. Its total return in three years is 583.6%. The $6.5 billion space technology company is riding on a strong momentum following a record-breaking year.
The provider of advanced satellite systems and autonomous robotics ended 2025 with a massive backlog of $4 billion. Total revenues for the year rose 51% year-over-year to a record $1.6 billion. Notably, adjusted net income climbed 71% to $190 million compared to 2024.
Mike Greenley, CEO of MDA Space, said it was another banner year of profitable growth. In addition to the $40 billion pipeline of future opportunities, MDA Space’s dual-use, production-ready products and services are also driving new opportunities. Another strong tailwind is the growing demand for defence and space technology, services and capabilities.
Tax-free growth
Growth-focused TFSA investors can consider taking positions in Shopify, Discovery Silver, or MDA Space. The stocks offer a diversified path to tax-free growth and potentially, enormous capital gains inside a TFSA.
