How do I keep my upkeep cost down? I earn 400K a day but after expense I'm only left with 2K.
(or you could just send me money

The nation's Durkar)
Every time you pass the 99 or 999 infrastructure level, the infra upkeep goes WAY up. If you have 1 more infra level than 999, like PrinceScamp does, you'll notice it shoot it so high that you won't be left with any cash after paying bills. After you get up to, in your case, 1260 you'll see the bill situation go back to more manageble. Also, banks would help you get some more money. If you think you could do this try it:
1) Don't pay bills
2) Destroy a factory and buy a clinic
3) Destroy another factory and buy another clinic
4) With the added population buy a factory back
The next time you collect taxes you'll have a lot more money. I was collecting around 450k a day with 380k in bills. I got rid of my factories and my 2 Labor Camps, bought 2 schools, a university, and 2 clinics. My collection went to up 720k and my bills are around 390k. By the next tax collection you should be OK on cash.
Also, you're resources are exactly what mine were yesterday. I had a marble/fur trade that I got rid of in favor of a water/marble and it gave me even more happiness and cash by improving my environment.
Hope it helps.