Each year more than 2.5 million couples say, “I do” in the United States. With the cost of the average wedding at $20,000 -- usually 20 percent of that in nonrefundable deposits -- wedding insurance has become increasingly popular.

Wedding insurance originated in London in 1988 and has been available in the United States since 1993. It has also been expanded to cover other special events, from bat mitzvahs and baby showers.

The standard policy covers the postponement or cancellation of the event for circumstances outside the host’s control. It covers any nonrefundable deposits for the reception hall, food, flowers and wedding attire. Couples can also insure against damages to other wedding-related items such as photography, videography and gifts.

While wedding insurance policies do not cover “a change of heart” of either the bride or groom, the following is a list of possible coverage for weddings and other events:

• Cancellation due to illness or death of the bride, groom, or other person essential to the event.
• Cancellation due to weather conditions of other circumstances beyond their control that prevent the bride, groom, other person essential to the event, or the majority of the guests from attending.
• Loss or damage of photographs. Some policies will pay to re-stage the wedding for pictures.
• Cancellation due to job loss.
• Loss or damage of the bridal gown.
• Accidents or failures on the part of suppliers before or on the event day.
• Loss of gifts.

A basic policy that covers loss of photos, videos, attire, presents, rings and deposits usually costs between $125 and $350, depending on the amount of coverage needed. In most cases, a policy can be purchased 14 days to two years prior to the event and generally carries a $25 deductible.

Liability insurance, which covers accidents or injuries at the event site, is also available. Many event venues are now requiring those renting the space to be protected against liability. A general liability policy costs about $50 for every $500,000 worth of coverage.

Before purchasing wedding or event insurance, the hosts should review their existing insurance policies to ensure they are not purchasing duplicate coverage. For example, a standard homeowners or renters insurance policy may provide enough protection for the wedding gifts, or liability protection for the reception hall.