Keep a rolling 12 months of all your bills.
http://www.bankrate.com/brm/news/mtg/20000518h.asp
The receipts for tax purposes should be kept according to importance. If the receipts are for important business expenses or tax deductions it is advisable to keep them for at least seven years after the taxes are filed.
Various companies keep the records various times. For the most part (for tax purposes) it is best to keep all records for 5 to 7 years after the date.
Most company's for tax purposes are required to keep all transactions, including personal information, for up to 7 years, at which time the records can be destroyed.
You should keep utility and credit card bills for 60-90 days because that is the maximum lenght of time to report any disputes. For credit cards, keep at least a year if you purchased any deductions.
As soon as it clears from the bank,than it can be tossed,the bank as it on file.
Until they are paid. There isn't really much reason to keep them, unless there are some items that can be deducted from your income taxes. For example, a couple of years ago, the IRS finally gave up a long series of court battles and allowed citizens to deduct an illegal telephone excise tax. The catch was, you had to have copies of your phone bills to calculate the refund. If you had the old bills (for three years back) you could take the deduction. So in SOME RARE cases, it MAY be USEFUL to keep three years of old utility bills. But there is no requirement to do so.
Keep a rolling 12 months of all your bills.
If you use your medical bills to claim a tax deduction, keep them for a minimum of three years afterwards. But if not, you can shred them immediately.
http://www.bankrate.com/brm/news/mtg/20000518h.asp
For 7 years in some countries and up to 10 in others.
It shouldn't matter about marriage or not - if your together and both contributing that's the way relationships are - keep paying your bills.
I would say for the length of the contract. That way of you ever fond your being over charged you can go through the bills to know what to ask back.
The receipts for tax purposes should be kept according to importance. If the receipts are for important business expenses or tax deductions it is advisable to keep them for at least seven years after the taxes are filed.
At least 7 years for Income Tax purposes.
In Canada you should keep all financial files for 7 years as the government can go back this far to audit.