Collin Crowdfund connects Dutch SMEs seeking funding with individual investors. Entrepreneurs apply for loans, and these applications are assessed by Crowdfund Coaches and risk analysts. If approved, the projects are listed on the platform for investors to review. Investors can then choose to invest in specific projects by transferring funds into their Collin account, from which loans are disbursed to borrowers. Repayments are made monthly, including both principal and interest. Investors can start with a minimum investment of €100​

Investors on Collin Crowdfund face typical risks associated with loan-based crowdfunding, including the possibility of borrower default, delayed payments, or insufficient collateral. Despite these risks, Collin Crowdfund employs thorough risk assessment procedures, including personal evaluations by Crowdfund Coaches and a risk committee. However, as with any investment, there is no guarantee against loss​

Collin Crowdfund primarily offers linear loans to SMEs. The loans are structured to provide regular monthly repayments over a specified term, which can range from short to long-term, depending on the project. This allows investors to support various business needs, including working capital, expansion, or specific projects​