If I decide to stop the procedure, can I have the investment back?

Of course, in fact you can take it back any time, even when it's in your legal entity’s bank account, you still have control over it to do whatever you want. However, if you already have an investor visa and your case is reviewed by the authorities after 2 years, they will find that you have repatriated the capital and will not renew your visa. In order to renew the visa, you need to keep the minimum investment amount in the country. Note that this does not include any profit generated from your investment in Brazil (e.g. bank interest), which can be taken out at any moment without affecting your hold of the visa. Profit repatriation is also exempt from taxes in Brazil.