Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Is it wise to invest small amounts of money short-term?
Even straight index funds grow at about 6-7%. on average, or over long periods of time.  In short time periods (quarters, years), they can fluctuate anywhere from -10% to +20%.  Would you be happy if your bank account lost 10% of its value the week before you had to pay the bill for the repairs?   Is it appropriate to invest small amounts for short periods of time? In general, no.  Most investments are designed for long term appreciation.   Even sophisticated financial companies can't do any better than 1 or 2% (annualized) on short-term cash reserves. Where you can make a huge difference is on the cost side.  Bargain with suppliers, or wait for sales on retail items.  Both will occasionally forego their margin on certain items in order to try to secure future business, which can make a difference of 20% or more in the cost of repairs.