ATS Assessor Treasurer Software

ATS is a property-tax application developed by Kitsap County, Washington, for county assessment and treasurer workflows. It is aimed at counties looking to configure tax calculations, collections and records around local processes. Its open-source model is appealing, but its development status makes it a less certain choice for counties seeking a broadly available, established deployment.

Overview

ATS covers assessment and collection work across real and personal property, including new construction, destroyed property, bankruptcies, foreclosures and LIDs. Payment plans and advance payment plans extend its reach into collections, while configurable accounting lets counties connect their workflows to existing accounting software.

The software is described as open source and freely available, but it is also still in development by Kitsap County, which is considering broader availability to other counties. That distinction matters: the feature set is relevant to county tax offices, yet a prospective adopter should weigh the project’s development status alongside the potential need for local customization and deployment work.

Key features

• Assessment and property records: ATS handles varied property types and events, including new construction, destroyed property, bankruptcies, foreclosures and LIDs. This breadth suits county offices managing more than straightforward residential assessments.
• Collection controls: Payment plans and advance payment plans support flexible collection arrangements. Users can also control whether to assign late fees and NSF payments, giving counties a way to configure these decisions to their practices.
• Public-facing updates: The Personal Property Online module lets business owners update personal property information through a public website. This gives businesses a direct route to maintain those records, rather than limiting updates to county staff.
• Accounting and queries: Counties can configure accounting and interface with their existing accounting software. Flexible queries help users work with the data, though the page does not describe specific reporting templates.
• API and database: ATS uses a general-purpose RESTful API, and its own interface accesses data through that API. It works with Kitsap County’s MS SQL database without modifications; other Entity Framework-supported databases can be used with a modification change. Counties should factor that qualification into any plan to use a different database.
• Implementation services: Velosys offers deployment assistance, customization, training and consultation for counties. Those services may help adapt the software locally, but their prices are not shown.

Pricing

The ATS plan is free: free. It is described as open source, with no paid feature tiers or seat limits given. Counties can use the software without a license charge, while customization, deployment, training and consultation are available as services with custom pricing. The practical cost advantage is clear; the tradeoff is that counties may need paid help to fit the software to their operations.

Platforms

ATS is categorized as an API platform. Its RESTful API is central to how the user interface accesses data, making it relevant to counties considering integration work. No other platform is identified.

Who it's for

ATS is best suited to county assessor and treasurer offices evaluating an open-source system for property-tax calculations and collections, especially where local configuration, accounting interfaces and property-record workflows matter. It is not the safest fit for organizations that need a clearly established, broadly available product today, given that Kitsap County is still developing the project and considering wider availability.

Pros and cons

Pros

• No software charge: The plan is free and open source, avoiding a license price for counties considering adoption.
• County-focused breadth: Assessments, multiple property types, payment plans, fee controls and accounting configuration address distinct parts of county tax work in one system.
• Integration potential: A RESTful API and support for the Kitsap MS SQL database provide a technical foundation for data access and existing accounting connections.
• Business-owner self-service: Personal Property Online lets business owners update their information through a public-facing module.

Cons

• Unsettled availability: The project remains in development, and broader availability is still under consideration, which limits confidence for counties needing a ready deployment.
• Local adaptation may add cost: Customization and implementation services are offered, but have custom pricing; using other Entity Framework-supported databases also involves a modification change.
• Platform scope is narrow: ATS is identified as an API platform, with no other platform specified for county users.

Alternatives

Property Tax Software is the category directory for comparing options across property-tax tools.

• Springbrook Property Tax Management is a paid alternative for teams needing residential, commercial, agricultural and personal-property tax coverage from assessment through billing and collection, across Android, iOS and web.
• Cozerna RPTA is a paid alternative with API, Linux, self-hosted and web platforms, and no free plan or trial. Its Per-LGU SaaS plan is priced at 25000.00 PHP pe.
• CSC Corptax is a paid web-based enterprise corporate tax option, with pricing requested through a demo.
• DEVNET Edge is a paid option across API, web and Windows, with all-inclusive pricing covering CAMA, assessment administration, billing and collection, permitting and zoning, records management, wEdge and EdgeMaps.
• PVDNet Suite is another paid option, available through API and web.
• itamlink is a paid API and web option with Professional and Enterprise plans; pricing is not shown and a demo is requested.

Verdict

County assessor and treasurer offices should consider ATS if they want a free, open-source foundation for property-tax calculations, assessments and collections, and can accommodate local deployment and customization. Its county-oriented workflows and API are meaningful strengths, but the development status is the main reason to look elsewhere if availability and deployment certainty are priorities.