The Valley Fintech Founder Helping Battling Queenslanders Beat the Cost-of-Living Squeeze

Mara Sutton launched SeedStack in February 2025 with $180,000 in seed funding, a desk at River City Labs on Doggett Street, and a thesis that most Australians were leaving small amounts of money idle while household budgets buckled. Eighteen months later, the Fortitude Valley-based fintech has 14,000 active users across Queensland, a fresh $2.1 million Series A round closed last month, and a waiting list pushing 3,000 people.

The timing is pointed. National grocery bills are running roughly 11 percent higher than they were three years ago, according to the Australian Bureau of Statistics's June 2026 consumer price index release, and property prices in Brisbane's inner suburbs have cooled enough to rattle first-home buyers without becoming affordable enough to attract them back. Into that gap — anxious households with a little spare cash but nowhere obvious to put it — SeedStack has planted itself.

Rounding Up the Spare Change

The platform works by linking to a user's everyday bank account and rounding up each transaction to the nearest dollar, sweeping the difference into a diversified portfolio of exchange-traded funds listed on the ASX. The minimum top-up is 50 cents. The average SeedStack user accumulates $340 in their first six months without making a single deliberate transfer, according to internal data the company shared with The Daily Brisbane.

Sutton, who previously worked as a financial planner at a Newstead advisory firm, says she built the product after watching clients in their twenties and thirties dismiss investing as something that required a lump sum they simply did not have. The platform charges a flat $2.50 monthly fee once an account exceeds $500, undercutting several larger micro-investing rivals operating nationally. Below that threshold, it is free.

SeedStack is not alone in the space — CommBank's Dollarmite pivot and the Melbourne-based Raiz Invest have been circling similar ground for years. But Sutton has leaned hard into Brisbane's specific demographic: younger professionals priced out of Paddington and New Farm real estate who are searching for somewhere to grow money that is not a savings account yielding 4.2 percent before tax.

Anchored in Brisbane, Eyes on a Tighter Economy

The company now employs 11 full-time staff, all based in Queensland. Its compliance and legal work is handled through a Brisbane CBD firm on Eagle Street, and its ETF partners include Vanguard Australia and BetaShares, both of which have institutional relationships with Queensland-based superannuation funds. SeedStack is also in early talks with the Queensland Government's Business Development Fund, which has backed more than 60 local startups since 2021.

The broader context matters here. AI data centre construction is competing for industrial land on Brisbane's fringe, pushing logistics and light-industrial rents higher and indirectly squeezing small businesses that might otherwise grow local employment. That pressure makes consumer-facing fintechs that reduce friction for ordinary investors look relatively defensive as an investment category, according to analysts at the University of Queensland Business School who have been tracking Queensland's startup ecosystem quarterly since 2023.

SeedStack's user data also tells a cost-of-living story. Forty-three percent of its accounts are held by people earning between $55,000 and $85,000 a year — precisely the cohort that earns too much for most hardship concessions but too little to feel comfortable about the future. The average account balance after 12 months sits at $1,140, modest by any measure but meaningful to someone who had nothing invested before signing up.

Sutton plans to launch a "financial health score" feature in September 2026 that will benchmark a user's savings rate against anonymised peers in the same suburb. The company is also applying for an Australian Financial Services Licence upgrade that would allow it to offer simple personal insurance products by mid-2027.

For Queenslanders feeling the pinch, the practical point is simple: platforms like SeedStack lower the barrier to entry sharply, but users should still read the product disclosure statement, compare the flat fee against percentage-based rivals as balances grow, and treat micro-investing as a complement to — not a replacement for — superannuation contributions. The $2.50 monthly fee becomes proportionally expensive on small balances, so the maths rewards those who stick around.