12. Where the amount of any instalment of a contribution is in default, the defaulter shall become liable to pay in addition to such amount-
Provided that a defaulter shall not be required to pay the penalty under this section-
| (a) a penalty of a sum equivalent to five per centum of such amount; and |
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| (b) where such amount is not paid before the lapse of thirty days after such amount had begun to be in default, a penalty of a sum equivalent to one per centum of such amount in respect of each further period of thirty days or part thereof during which such amount is in default: |
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| (a) if the defaulter proves to the satisfaction of the Commissioner that the failure to pay was due to circumstances beyond his control; and |
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| (b) if the defaulter furnishes to the Commissioner a correct return of his income and pays the amount in default. |
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Sri Lanka Consolidated Acts