Like most entry fees in northern Tanzanian parks, the entry fees for Mount Kilimanjaro National Park are astronomical.
It is not something that needs to concern you, as this fee is included in the price when you book a Kilimanjaro climb.
It is, however, interesting to know...
Rescue Fee: $20
Your Entry Fee: $70 (listed as "Conservation Fee")
Guide and Porter Entrance Fees: TZS 3500 (about $1.70 and includes entry and camping/hut fees)
You'll end up with 3-5 staff per climber, depending on the size of your group.
Hut/Camping Fee: $60/$50
The prices are valid until June 2018. You can look up all Kilimanjaro fees yourself on the Tanzania Parks page (PDF).
Add up those figures and work out how much of the whole cost of your Kilimanjaro climb goes towards park fees.
Now look at the whole price for your climb and work out what's left to pay guides and porters, for your equipment and food, the maintenance of the gear, the transfer vehicles, the training of the staff, etc. Not to mention admin staff, licensing fees (thousands per year) and other overheads the operators have to cover.
For the cheapest sensible option, a six day/five night climb, your park fees already add up to around $800! Let's see where the rest of your money goes...