zlacker

To be fair, the original topic of this thread was "tax traps", one of the most famous in the UK being a gradual decrease of benefit that was still a marginal increase in net, but it was still deemed worth complaining about.

>>Sketch+(OP)
Yeah, to some extent it's also important that the marginal tax rate should always be monotonically nondecreasing. But that's not quite as critical as the marginal tax rate never being above 100% (including all accounting for loss of credits/deductions).