=
IF(A1 > 725000, 28453 + 0.0515 * (CEILING(A1,100) - 725000),
IF(A1 > 360000, 11115 + 0.0475 * (CEILING(A1,100) - 360000),
IF(A1 > 150000,  3135 + 0.038  * (CEILING(A1,100) - 150000),
IF(A1 > 120000,  2280 + 0.0285 * (CEILING(A1,100) - 120000),
                        0.019  *  CEILING(A1,100))
)))