Accounting software company MYOB has confirmed it raised $833 million in the country's biggest initial public offer so far in 2015, selling its shares at the upper end of the amount it had hoped to get.

The company sold 228.3 million shares for $3.65 each, compared to its target range of $3 to $4 a share.

MYOB's return to the sharemarket on Monday is the country's largest float since health insurer Medibank Private in November.

That will give the company a market capitalisation of $2.13 billion when it starts trading on the ASX on Monday. Its current owner, US private equity giant Bain Capital, keeps a 58 per cent stake and company managers hold another 3 per cent.

In a statement to the stock exchange, MYOB chairman Justin Milne said the company's float had seen "great support... from investors around the world, including local institutions in Australia as well as US investors."