A conv between two taxpayers

"I don't really get this NPWP vs 'fiskal' thing"
"Why?"
"You know, I travel a lot. It's like twice a month. I always show our office's NPWP when paying the fiskal. So the office will deal with the refund at year end"
"And?"
"Yes, now I should use my own personal NPWP, instead of office's"
"What's problem with that?"
"Well, think about it. If I go abroad twice a month, it means I'm exempted from paying Rp 24 million a year -- or Rp 60 million if you assume Rp 2.5 million per travel like that now imposed on the non-NPWP holders"
"And the problem is...?"
"If I were a taxman, I'd go suspicious: hey this lady goes abroad 24 times every year. Ehm, she must be rich. Let's go after her records and all... While of course I go on duty, not for my own pleasure"
"I still don't see a problem. Let them do that, no?"
"Oh, you don't wanna do that. Dealing with taxmen is hell. No matter how right you are..."
"Really?"