# Flood insurance cost and 18% cap

> Median NFIP premiums, how fast a discounted flood policy climbs to its full-risk price under the 18% yearly cap, and the gap above $250,000.

- Address: https://typicalhomeinsurancecost.com/flood-insurance-cost/
- Regulator, statute or survey: [GAO-23-105977, FEMA's new rate-setting methodology (July 2023)](https://www.gao.gov/assets/830/828044.pdf)
- Source read on: 2026-11-06
- Tables as JSON: https://typicalhomeinsurancecost.com/data/flood-insurance-cost.json

The estimator on this page works in the visitor's browser; the averages and factors it uses are listed below, each with its regulator or survey source.

A homeowners policy doesn't pay for flood damage. Flood cover is a separate policy, most often from the National Flood Insurance Program (NFIP), which FEMA runs and private insurers sell. If you have a mortgage on a home in a high-risk flood zone, the lender will require it; elsewhere it's optional, though one in three NFIP claims from 2013 to 2023 came from outside the high-risk zones ([FEMA brochure F-002, September 2024](https://agents.floodsmart.gov/sites/default/files/media/document/2025-07/fema-nfip-why-do-i-need-flood-insurance-brochure-09-2024.pdf)).

## What flood insurance typically costs

Since October 2021 FEMA prices each NFIP policy from the individual building: its elevation, distance to water, type of flooding and cost to rebuild. The Government Accountability Office analyzed 3.37 million policies in force at the end of 2022 ([GAO-23-105977](https://www.gao.gov/assets/830/828044.pdf), July 2023):

| Figure (December 31, 2022) | Median yearly premium |
|---|---|
| What policyholders were paying | $689 |
| Full-risk premium under the new method | $1,288 |
| Policies already at full risk | about one in three (34%) |

The median is the middle policy, not the average; a coastal house in a high-risk zone can pay several thousand dollars, an inland house on high ground a few hundred. About two-thirds of policies were still below their full-risk price, and the median had to rise almost 90% to get there.

## The 18% cap and the glide path

By law, most NFIP premiums can't rise more than 18% a year. GAO notes the statutory caps range from 5% to 25% depending on the type of property, and about 85% of policies are under the 18% cap. A discounted policy therefore climbs each year until it reaches its full-risk price, then tracks that price.

The calculator does exactly that: premium × 1.18 each renewal, stopping at the full-risk figure you enter. Fees and surcharges on the policy aren't part of the capped premium, so the bill can rise slightly faster.

## Worked examples

| Paying now | Full-risk premium | Renewals to reach it | Premium path |
|---|---|---|---|
| $689 | $1,288 | 4 | $813, $959, $1,132, $1,288 |
| $500 | $1,500 | 7 | $590, $696, $822, $969, $1,144, $1,350, $1,500 |
| $1,500 | $1,200 | – | already above full risk: decreases instead |

A policy already above its full-risk price moves down instead. FEMA's comparison for Alabama, for example, counts 11,217 policyholders with decreases under the new method, against none under the old one ([FEMA, Alabama comparison, April 2025](https://www.fema.gov/sites/default/files/documents/fema_al-new-methodology-vs-old-methodology_narrative_2025.pdf)).

## What the federal policy pays at most

| Single-family home | NFIP maximum |
|---|---|
| Building | $250,000 |
| Contents | $100,000 |

Source: [FEMA brochure F-002](https://agents.floodsmart.gov/sites/default/files/media/document/2025-07/fema-nfip-why-do-i-need-flood-insurance-brochure-09-2024.pdf), September 2024. A house that would cost $400,000 to rebuild leaves $150,000 of building damage uninsured in a total loss. Private "excess flood" policies sell cover above the NFIP limits, and some private insurers sell primary flood policies instead of the NFIP. Switch the calculator to More factors to see your own gap.

## The 30-day wait

A new NFIP policy usually takes effect 30 days after purchase. There's no waiting period when the policy is bought because a lender requires it in connection with making, increasing, extending or renewing a loan. Buying when a storm is already in the forecast is too late for that storm.

## Average claim

NFIP claims averaged $52,000 from 2019 to 2023, according to the same FEMA brochure. Set that against a median premium in the hundreds and the case for cover outside the high-risk zones becomes clearer.

## Checklist before you buy

- Ask for the full-risk premium as well as the first-year price, so you know where the 18% path ends.
- An elevation certificate isn't required, but FEMA says it can help you pay less ([FloodSmart](https://www.floodsmart.gov/flood-insurance-cost)).
- If you're buying a house, ask the seller what they pay and whether their policy can be assigned to you; ask the agent how that affects the price path.
- Compare with a private flood quote, especially for homes worth more than the NFIP limits.

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From Typical Home Insurance Cost. Corrections: contact@typicalhomeinsurancecost.com