Business income and extra expense usually come built into a BOP. Coverage typically pays the actual loss sustained, and it is not usually limited by coinsurance, a monthly maximum or a total dollar amount. A time limit does that job instead.

The time limit: ISO's BOP pays loss that occurs within 12 consecutive months after the date of direct physical loss. Example: a covered fire on March 1, 2026 closes a bookstore, and permit delays stretch repairs to June 1, 2027. The policy pays actual lost income, but only for loss within 12 months after March 1, 2026. The clock runs from the date of damage, not from the policy's expiration.

The outline also says some BOPs compute business income coverage as 20% of the building limit plus 100% of the personal property limit. Example: a $500,000 building limit and a $120,000 personal property limit give $100,000 + $120,000 = $220,000. The current ISO form has no such formula; it pays actual loss sustained within the 12-month limit.

Anchor store dependency: the coverage trigger may include dependence on an anchor store. A dependent property includes one that attracts customers to the insured's business. If a fire closes a mall's anchor department store and a small shop's customer traffic falls, business income from dependent properties may respond even though the shop itself is undamaged. ISO includes a small limit for this, which can be increased.