If you have been approved for SSI and have received checks for retroactive benefits you have nine months to spend those funds. After nine months, if you still have more than $2,000.00 in total assets as a single person or more than $3,000.00 if you are married, you will no longer receive SSI benefits until you get below that amount.
This is usually not a problem for most SSI beneficiaries but should be taken into consideration.