Sales tax in New Castle County, Delaware
The sales tax rate in New Castle County, Delaware is 0%. That is a 0% state rate, with no county rate on top: New Castle County levies none, and it is the same at every address in the county.
What is the sales tax rate in New Castle County?
| Delaware state rate | 0% |
|---|---|
| Combined rate | 0% |
Why the rate here is not the whole story
No sales or use tax of any kind on retail purchases; the state instead relies on a gross receipts tax imposed on businesses.
How do I find the exact rate for an address in New Castle County?
The rate is the same across New Castle County, but if you are collecting tax it is worth confirming against the source. Use Delaware's own lookup. A vendor's calculator is not the state speaking.
Who has to collect sales tax in New Castle County?
A seller with a physical presence in Delaware collects at the rate for the address where the sale takes place. A remote seller collects once it passes Delaware's economic nexus threshold, which is a separate question from the rate and is covered on our sales tax nexus checker. Marketplace facilitators generally collect on behalf of their sellers.
How does New Castle County compare?
See Delaware sales tax for the statewide picture, including the average local rate and what is exempt. Property tax is a separate tax with separate rules: property tax in New Castle County.
Sources
- New Castle County rates: Delaware Division of Revenue / Tax Foundation, State and Local Sales Tax Rates (Jan. 2026)
- Collected and verified September 10, 2026. Confidence: S on the rate components (P read on a primary agency page, S strong but indirect, U unverified).