New insured loss estimates in the wake of Superstorm Sandy are as much as $25 billion and insurers and reinsurers have begun releasing individual estimates.

Swiss Reinsurance Co. faces about $900 million in claims from Sandy net of retrocession and before tax, according to a statement. The Zurich-based reinsurer said overall market loss may hit $25 billion.

AIR Worldwide last week revised its estimate for industry insured losses to between $16 billion and $22 billion, the Boston-based catastrophe modeler said in a statement.

The revised estimate includes wind and storm surge damage to onshore residential, commercial and industrial properties and their contents, and time element coverage such as additional living expenses for residential properties and business interruption for commercial properties, AIR said. The estimate does not include losses incurred by the National Flood Insurance Program.

Home and auto insurer Allstate Corp. expects to report October disaster losses of $1.08 billion, mostly due to Sandy, the insurer said last week.

As of last week, the Northbrook, Ill.-based insurer has paid $340 million in claims, with two-thirds of the losses in New York, according to its statement.

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While Allstate's homeowner policies exclude coverage for flood damage, “auto policyholders generally have coverage for physical damage due to flood if they have purchased optional auto comprehensive coverage,” according to the insurer's statement. Auto claims resulting from Sandy represent 40% of Allstate's total gross losses in October, with 78% in New York.

Allstate expects to recover about $200 million from its reinsurers, the insurer said.

The White House is expected to seek from Congress at least $11 billion to help fund disaster recovery from Sandy, congressional aides said last week.

New York Gov. Andrew Cuomo last week said the state will need $49 billion to repair and restore damaged infrastructure and structures and to cover lost revenue and other expenses, prompting the governor to impose emergency regulations on insurers to speed claims processing for hundreds of thousands of residents.

The Metropolitan Transportation Authority said last week that after insurance, it expects to be on the hook for nearly 20% of the $5 billion economic loss estimate for Hurricane Sandy-related damages.

New Jersey Gov. Chris Christie's office said the state suffered at least $29.4 billion in overall losses, with much of the damage affecting its transit system and coastline.