> the benefits include a prosperous economy and stable political environment their bank operates in.

Can you back your claim with facts? UBI is universal, not magic.

> I expect to pay and continue paying a lot,

Just say a number, so we will put it into formula to see is your expected taxation will match minimum requirement for UBI.

Typical wealth distribution without UBI:

  ^
  |
  |
  |     *
  |   *   *
  |  *     *
  | *        *
  | *          *
  |*                 *           *       *
  +------------------------------------------------>

   ^ - number of people, > - income

Typical wealth distribution with UBI:

  ^  *
  |
  |
  |
  |       
  |
  |
  |     
  |   *
  |   *
  |    *
  |     *
  |         *      *               *
  +--U------------------------------------------->

   ^ - number of people, > - income, U - UBI level

Please notice, that area (sum of n*i) of both graphs must be same, i.e. you cannot just print money like in computer game.

As you see, UBI erases middle class. Everyone becomes poor, except some rich.