Upcoming National Meeting

2024 Spring Conference / Audit Session

This three and a half day conference will bring multistate tax professionals, with various levels of experience in state and local income/franchise taxes and sales/use taxes together in an environment that allows for extensive interaction and exchange of information as well as updates on key SALT issues and insights regarding state tax trends and opportunities. The program is targeted to all level

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Newsletters & Media

Cost Conscious

ISSUE 24-08; April 19, 2024

State Corporate Income Tax Filing Methods (Part 1) – In recent years, many states have either changed or considered changing their default corporate tax filing. New Jersey adopted water’s-edge combined reporting in 2019 only to come back in 2023 with a proposal to allow the Director of Tax to “decombine” taxpayers. Maine, New Hampshire, and Vermont have studied the implementation of mandatory worl

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Bloomberg TAX

Attorney Seeks to Revive $300,000 Tax Deduction Over Race Car Ad

April 23, 2024

A Denver attorney should be permitted to deduct about $303,000 spent on race car driving as an advertising expense for his litigation practice, he told a federal appeals court.

California Digital Ad Tax Bill Advances Over Tech Objections

April 23, 2024

A California bill levying a 5% tax on digital advertising to fund youth mental health services passed its first committee Tuesday over stiff opposition from the tech industry.

Maverix’s Ruffolo Warns Trudeau of Capital Flight After Tax Hike

April 23, 2024

A prominent Canadian technology investor joined the chorus of Canadian businesses criticizing Prime Minister Justin Trudeau’s decision to raise the capital-gains tax, arguing it will cause capital flight from the country. 

NJ Business Groups Turn Up Heat Against Proposed Tax Surcharge

April 23, 2024

New Jersey business groups are ratcheting up the pressure on lawmakers to reject a proposed tax hike on large corporations to fund public transportation, setting up a showdown ahead of the state's June 30 budget deadline.

Michigan High Court Told it Should Skip Inflation Income Tax Cut

April 23, 2024

An appeals court correctly held that an inflation-based income tax cut was temporary as indicated by the plain language of the law, the state treasurer told the Michigan Supreme Court.

Judge Dismisses Griffin’s Privacy Claims in Suit Against IRS (1)

April 23, 2024

A judge allowed Ken Griffin’s lawsuit accusing the Internal Revenue Service of leaking his confidential tax information to proceed, but dismissed his claim that the agency broke privacy laws by failing to safeguard his data.

IRS Guidelines Slow Whistleblower Rewards, Group Tells Lawmakers

April 23, 2024

The IRS must reverse its guidelines that are leading to years in delays in payments to whistleblowers and discouraging them from coming forward, the National Whistleblower Center said in a letter to US lawmakers.

Kaiser Escapes $6 Million Washington Property Transfer Tax Bill

April 23, 2024

Kaiser Foundation Health Plan of Washington won't have to pay a $6.68 million real estate excise tax tab because the relevant state statute doesn't apply to transfers of nonprofit corporations, an appeals court ruled Tuesday.

Deduction Cap on $8.9 Million Easement Should Stand, IRS Says

April 23, 2024

An Eastern Tennessee partnership shouldn't be entitled to an $8.9 million conservation easement deduction for donating 1,300 acres because only the easement's adjusted basis can be deducted, not the its fair market value, the IRS said.

Seattle May Keep $160 Million Property Tax to Improve Waterfront

April 23, 2024

Seattle may impose property tax assessments of up to $160 million to transform its central waterfront because the valuation methods rightly omitted alleged property value reductions attributed to Covid-19, a Washington appellate panel ruled.

Featured Resources

COST - Council on State Taxation

Amicus Briefs

Garcia, D. v. American Eagle Outfitters, Inc.

COST’s brief in the Supreme Court of Pennsylvania Western District addresses whether a class action filed under Pennsylvania’s consumer protection laws for alleged overcollections of sales tax should be dismissed.

COST - Council on State Taxation

COST Studies, Articles & Reports

Mandatory Worldwide Combined Reporting: Elegant in Theory but Harmful in Implementation

This paper documents the harmful and unnecessary implications surrounding state adoption of mandatory worldwide combined reporting (MWWCR), by Douglas L. Lindholm and Marilyn A. Wethekam of the Council On State Taxation (COST).

COST - Council on State Taxation

COST Comments & Testimony

Letter to the Legislature in Support of S.B. 150, Centralization of Accommodations Taxes

COST submitted testimony in support of Alabama legislation S.B. 150 and H.B. 220, seeking centralization of accommodations taxes.