The total costs of an IPO are in the low, one-digit percent number in relation to the transaction size (on average approximatively in the range of 2-5%). The largest cost elements are the underwriting/placement fees charged by the investment banks. After that, legal and accounting fees have the biggest impact. As far as the SIX listing fees, SIX charges as a way of example CHF 19’000 of listing and admission fees for an IPO with a market capitalization of CHF 100 million.