Upcoming National Meeting

2019 Spring Audit Session & Income Tax Conference

2 ½ day conference which combines technical and policy presentations from seasoned professionals focused on current income and franchise tax issues. It is COST’s primary audit session, where current audit information on all 50 states is shared among the membership. The conference is targeted to income and franchise tax professionals at all levels of experience.

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Newsletters & Media

Cost Conscious

ISSUE 19-10; May 17, 2019

Benchmarking: Data Analytics Tools – As tax departments continue to evolve and integrate new technology, several data analytics tools are gaining prominence. Which of the following software tools does your company currently utilize for managing data (apportionment, reserves, credits, number of audits, etc.) and presenting tax information?


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Tax Notes

Water's-Edge Method Is Default for New Jersey Combined Returns


The water’s-edge group filing method will be the default for combined returns in New Jersey, according to new guidance from the state's tax department.

Missouri Wind Farms Could Be Assessed at Local Level


Missouri lawmakers have passed legislation to keep wind farm tax revenues local rather than distributed throughout the state if the farms are purchased by public utilities.

Lawsuit Filed Over New Jersey Tax Incentive Probe


A New Jersey political leader and several companies tied to him have sued Gov. Phil Murphy (D) and the New Jersey Economic Development Authority over a task force investigation into state tax incentives.

Washington Governor Signs Major 2019 Tax Bills


Washington Gov. Jay Inslee (D) has signed the state budget and key tax legislation, including a progressive reform to the state real estate excise tax and a new tax on business to fund career-related education.

Massachusetts Groups Call for Family Medical Leave Plan Delay


Several Massachusetts business and advocacy organizations are urging the state’s legislative leaders to delay rolling out a paid family medical leave program that will be funded by a payroll tax.

Arizona Moves Closer to Conformity Deal


Arizona policymakers are getting close to approving a final IRC conformity deal as part of the state’s fiscal 2020 budget package.

Supreme Court Won't Hear Louisiana Film Tax Credit Appeal


The Supreme Court has declined to review a Louisiana case involving fraudulent claims for film tax credits.

Louisiana Issues Refund Guidance for Local Part of Remote Sales Tax


Louisiana taxpayers can request a refund for the local portion of the sales and use tax paid to remote sellers if the tax rate in their parish is lower than the remote seller rate, according to guidance issued by the state.

California Senate Rejects Governor's 'Water Tax'


A California State Senate budget panel has rejected Democratic Gov. Gavin Newsom's controversial “water tax” proposal to fund safe drinking water projects.

State Sovereignty, Commerce Clause Fueling P.L. 86-272 Debate


The tension between state sovereignty and Congress’s legislative power under the federal commerce clause is fueling debate over the future of P.L. 86-272.

Featured Resources

COST - Council on State Taxation

Amicus Briefs

Lockheed Martin v. Hegar

COST filed an amicus brief asking the Texas Supreme Court to review whether sales of sensitive military equipment to foreign governments, which the DoD is required to act as an intermediary, are Texas-sourced sales or more properly not Texas-sourced sales because the equipment was delivered to foreign governments.

COST - Council on State Taxation

COST Studies, Articles & Reports

2019 State and Local Amnesty Programs

This report tracks state and local tax amnesty programs by state for 2018.

COST - Council on State Taxation

COST Comments & Testimony

Letter in Opposing Accelerated Sales Tax Remittance Proposal

On May 22, COST sent a letter to Connecticut legislators opposing Section 19, relating to automatic sales tax remittance, from Substitute S.B. 877 (File 913).