File Delaware Form 200-01X
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Delaware Form 200-01X is a tax return document for residents who need to amend their previous return. Also known as the amended individual tax return form, it is used to correct any errors in income, reimbursements or tax credits on a number of other Delaware 200-01R tax documents. When filling out your 200-01X form, you will be given the chance to explain why you are making an amendment in your tax return.