This can't be right...
Japan has similar stupid tax laws as American IRS?
There's only a few nations I know of,mostly European,who actually do the logical thing of just sending the tax to you as a bill.
They already know how much you make,why force the worker to calculate the tax with a confusing system that can land them in jail for a mistake?
On top of that,though,the nations that actually send the bill also give a full and complete breakdown of which percentages of your tax are being sent to which service,so you will always know if the nation is making changes with your taxes.
Gotta love this inbalanced world,eh?