Address Validation

Address Validation and Zip 4 Web Service

Our Address validation and zip+4 tax rates web service is the most accurate service available. First an address is validated to a USPS CASS certification, then mapped to the zip+4 for the most accurate tax information available.  The address validation will return the cleansed address information including the street address, city name, state abbreviation, 5 digit zip code and the +4 zip code.  The tax information returned includes the  taxing jurisdiction information, FIPS codes, the general sales and use tax rates at the state, county, city, SPD, MTA, other1-4, totals, reporting codes, min and max taxes, effective dates, and more.  For Canada you will receive the Province abbreviation, Province name, the GST rate, the PST rate, the HST rate, the total sales tax rate, and whether shipping and handling are taxable.

Validated Address Information

Address 1
Address 2
Address 3
Plus4 Value

Taxing Jurisdiction Information

Zip Code
State Abbreviation
County Name
City Name
State FIPS Code
County FIPS Code
City FIPS Code
FIPS Geocode

Sales Tax Information

Total Sales Tax
State Sales Tax
County Sales Tax
City Sales Tax
MTA Sales Tax
SPD Sales Tax
Other1 Sales Tax
Other2 Sales Tax
Other3 Sales Tax
Other4 Sales Tax
State Effective Date
County Effective Date
City Effective Date
MTA Effective Date
SPD Effective Date
Other1 Effective Date
Other2 Effective Date
Other3 Effective Date
Other4 Effective Date
Tax Shipping Alone?
Tax Shipping and Handling Together?

Use Tax Information

Total Use Tax
State Use Tax
County Use Tax
City Use Tax
MTA Use Tax
SPD Use Tax
Other1 Use Tax
Other2 Use Tax
Other3 Use Tax
Other4 Use Tax

Reporting Information

County Reporting Code
City Reporting Code
MTA Name
MTA Number
SPD Name
SPD Number
Other1 Name
Other1 Number
Other2 Name
Other2 Number
Other3 Name
Other3 Number
Other4 Name
Other4 Number
County Tax Collected by
City Tax Collected by
County Taxable Max
County Tax over Max
City Taxable Max
City Tax Over Max

The Canada lookup tool will return the following:

Province Abbreviation
Province Name
Total Sales Tax
Tax Shipping and Handling?