taxsim doesn't have any file size limit, but the cgi interface does seem to restrict uploads
to small files. 2,000 records is probably ok. If the file is too large you'll get a
"conversion error" and/or a complaint about a short record. In that case please switch to
the ftp or ssh protocols. They are much faster
anyway and only one or two commands.
I suggest ssh - it can do about 1 million records per
minute on a fast connection. the ftp interface runs about
100 thousand records per minute. You can also run on your
local machine from
Stata or with the low
level interface