- Latest available (Revised) - English
- Latest available (Revised) - Welsh
- Original (As enacted) - English
- Original (As enacted) - Welsh
This is the original version (as it was originally enacted).
(1)Caiff ACC wneud ymholiad ynghylch ffurflen dreth os yw’n dyroddi hysbysiad am y bwriad i wneud hynny (“hysbysiad ymholiad”) i’r person a ddychwelodd y ffurflen dreth cyn diwedd y cyfnod o 12 mis sy’n dechrau â’r dyddiad perthnasol.
(2)Y dyddiad perthnasol yw—
(a)os dychwelwyd y ffurflen dreth ar ôl y dyddiad ffeilio, y dyddiad y dychwelwyd y ffurflen dreth, neu
(b)fel arall, y dyddiad ffeilio,
ond os diwygir y ffurflen dreth o dan adran 41, y dyddiad perthnasol yw’r diwrnod y gwnaed y diwygiad.
(3)Ni chaiff ffurflen dreth a fu’n destun un hysbysiad o dan yr adran hon fod yn destun un arall, ac eithrio hysbysiad a ddyroddir o ganlyniad i ddiwygio’r ffurflen dreth o dan adran 41.
(1)Mae ymholiad i ffurflen dreth yn cwmpasu unrhyw beth sydd wedi ei gynnwys yn y ffurflen dreth, neu y mae’n ofynnol ei gynnwys yn y ffurflen dreth—
(a)sy’n ymwneud â’r cwestiwn pa un a yw’r dreth ddatganoledig y mae’r ffurflen dreth yn ymwneud â hi i’w chodi ar y person a ddychwelodd y ffurflen dreth, neu
(b)sy’n ymwneud â swm y dreth ddatganoledig sydd i’w godi ar y person a ddychwelodd y ffurflen dreth.
(2)Ond os dyroddir hysbysiad ymholiad o ganlyniad i ddiwygio ffurflen dreth o dan adran 41 ar ôl cwblhau ymholiad i’r ffurflen dreth, mae’r ymholiad wedi ei gyfyngu—
(a)i faterion y mae’r diwygiad yn ymwneud â hwy, a
(b)i faterion y mae’r diwygiad yn effeithio arnynt.
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