Can I use R for comertial projects for free?

I cannot tell from your message whether
(a) your project is a statistical consulting one and you want to
     use R to do the calculations and graphics for it, but will not
     give your client R itself,or
(b) your project will deliver software to the client, and that
     software will include a copy of R.

In case (a), the answer is "of course you can".
In case (b), see the other replies.  But had you considered just
providing a little (shell or PowerShell) script your client can run
to download and install R themselves?

Hi,

I kindly interesting can i use R for commercial projects for free? I am
going to get statistics in my commercial project with R and wanted to know
will it be legal or no?

Thanks in advance.

Best Regards,
Dmitry

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