Federal flood insurance authority expires September 30. Here is what a lapse actually stops.

What expires, and what keeps running

The program has no single sunset provision. Separate legal provisions attach to separate pieces of it, which is why a lapse is narrower than the phrase suggests. According to the Congressional Research Service, two things happen on September 30, 2026 unless Congress acts:

• The authority to provide new flood insurance contracts expires. Contracts entered into before the expiration continue until the end of their policy term of one year.
• Treasury borrowing authority drops from $30.425 billion to $1 billion. This is the constraint that eventually bites on claims, not on coverage.

FEMA's standing instruction to insurers says that policies in force before midnight on the last effective day of authorization remain in force until their expiration date, and that claims under those policies are processed and paid as usual. It says the same of covered losses that happen during the lapse itself. FEMA also notes on its reauthorization page that it and Congress have never failed to honor the flood insurance contracts already in place with policyholders.

The borrowing figure is the honest caveat to that. With borrowing authority reduced to $1 billion, CRS describes FEMA continuing to pay claims out of premium dollars flowing into the National Flood Insurance Fund and the reserve fund. If those funds were depleted, claims would wait until enough premium came in, unless Congress appropriated more money or raised the borrowing limit. That is a timing risk on payment, not a question of whether a policy responds.

If you already have a policy

Nothing you need to do changes on October 1, with one exception worth putting on a calendar now: your renewal.

During a lapse, insurers may not issue renewal notices. FEMA's guidance carves out the case that protects most people: if the insurer issued the renewal offer before the expiration and receives the renewal premium within the 30-day grace period, it may still renew the policy. So a renewal offer already in your hands is a renewal you can still complete by paying it. A renewal offer that has not been sent yet cannot be sent during a lapse.

Two smaller points from the same guidance. A request to increase or add coverage is treated as new business and cannot be issued during a lapse. Cancellations are still processed normally, which matters only in that dropping coverage during a lapse is a decision you may not be able to reverse quickly.

If you are closing on a house, this is the part that bites

The mechanism is the mandatory purchase requirement. Federally regulated lenders, federal agencies, and the government-sponsored enterprises must require flood insurance as a condition of a mortgage on a property in a Special Flood Hazard Area in a participating community. CRS notes that lenders, not FEMA, enforce that requirement, and that without available flood insurance, real estate transactions in those areas could be significantly hampered.

FEMA's guidance sets out how a closing near the deadline is handled, and the timing is more forgiving than it first looks. Where the application is dated on or before the last day of effective authorization, the insurer may still issue the policy effective on the closing date if it receives the application and the full amount due within 30 days of closing when payment came from an escrow account, title company, or settlement attorney, or within 10 days when it did not. An application dated after the lapse begins cannot be issued.

Any quote given during a lapse is informational only and not binding. Insurers may take and hold an application and premium pending reauthorization, and FEMA's sample letter to prospective policyholders spells out the alternative, which is a refund of the premium and no retroactive coverage.

Private flood insurance can satisfy the mandatory purchase requirement where it meets the conditions set in statute, and CRS describes that market as growing while the requirement is still generally met through NFIP coverage. If you are buying, the insurability questions worth asking before you are committed are in our guide to checking whether a house can be insured.

This has already happened twice in the last year

The useful context is not that a lapse might occur. It is that the program has been running on short-term extensions for years and has gone dark repeatedly. CRS counts 35 short-term reauthorizations enacted since the end of FY2017, and records the recent lapses directly:

• October 1 to November 12, 2025. The long one, running alongside the government shutdown.
• February 1 to February 3, 2026. Three days, ending with the extension that set the current September 30, 2026 date.
• Earlier: January 20 to 22, 2018, about eight hours on February 9, 2018, and about 13 hours on March 23, 2024.

In most cases Congress reauthorized the program retroactively. CRS notes that the legislation ending the shutdown explicitly did so.

The 2025 lapse is the one to learn from, because it produced a documented consequence rather than a hypothetical one. Because the program could not issue renewal offers from October 1, it could not send renewal and underpayment notices, and policyholders faced genuine gaps in coverage as a result. On November 14, 2025 FEMA extended the 30-day grace period: any renewal payment due on or after October 1, 2025 became due on the later of January 15, 2026 or the standard renewal terms of the policy. The stated reason was concern about policy lapses, reduced coverage, and denied claims during a gap.

For scale, CRS reports the program carries nearly 4.6 million policies providing almost $1.3 trillion in coverage across more than 22,700 participating communities. On closings, FEMA cites a National Association of Realtors estimate that a lapse might affect roughly 1,300 property sales a day, or about 40,000 closings a month. CRS separately reports that during the June 2010 lapse, estimates suggested over 1,400 closings a day were canceled or delayed. Both are estimates rather than counts, and we have not verified either against transaction records.

What to do in the next few weeks

• Check your renewal date. If it falls near or after September 30 and you have not received a renewal offer, ask your agent whether one has been issued. An offer issued before the deadline is the thing that keeps the grace-period route open.
• If you want more coverage, ask now. An increase is treated as new business and cannot be issued during a lapse.
• If you are closing in early October, get the application dated on or before September 30 and confirm with the settlement agent how and when the premium will reach the insurer, because the 10-day and 30-day windows turn on that.
• Do not cancel anything to save money during a lapse. Cancellation still works during a lapse. Replacing the policy may not.

How we will treat this

This page describes federal program authority. It asserts nothing about any insurance company, and no carrier record on this site changes because of it. If a lapse happens and a state regulator or a carrier takes an action in response, that becomes a dated entry on the events timeline with a link to the filing, the same as everything else here. Our standard for that is set out in the methodology and corrections page.

If you are dealing with a homeowners non-renewal rather than a flood question, the non-renewal playbook is the better starting point.