Capital committed by investors. Cash to the maximum of these commitments may be requested or drawn down by the private equity managers usually on a deal-by-deal basis. This amount is different from invested funds for three reasons. First, most partnerships will initially invest only between 80% and 95% of committed funds (possibly even less). Second, it may be necessary in early years to deduct the annual management fee that is used to cover the cost of operation of a fund. Third, payback to investors usually begins before the final draw down of commitments has taken place. To the extent that capital invested does not equal capital committed, limited partners will have their private equity returns diluted by the much lower cash returns earned on the uninvested portion. Avoiding this situation is the main reason for the Partners Group over-commitment model, which aims to keep Partners Group products as close 100% invested as possible.