Hamilton, IL Population and Races. As of 2010-2014, the total population of Hamilton is 3,059, which is 0.99% more than it was in 2000. The population growth rate is lower than the state average rate of 3.62% and is much lower than the national average rate of 11.61%.
4. You do not file a return: Keep records indefinitely. 5. You file a claim for credit or refund after you file your return: Keep records for three years from the date you filed your original return or two years from the date you paid the tax, whichever is later.6. You file a claim for a loss from worthless securities or bad debt deduction: Keep records for seven years. 7.ou do not file a return: Keep records indefinitely. 5. You file a claim for credit or refund after you file your return: Keep records for three years from the date you filed your original return or two years from the date you paid the tax, whichever is later. 6.
1 Typically, the IRS can come after your business for failing to report income for up to 6 years after your filing if the amount is greater than 25% of your businessâs gross income. 2  If you filed for a deduction for a bad debt or worthless security, the IRS suggests you keep your supporting tax records for 7 years.ere are some basic record retention rules to think about for your business. 1  Business Income Tax Returns and Supporting Documents. 2  It makes sense to keep a final copy of your business income tax returns and related correspondence with the IRS permanently to help you prepare future or amended returns.