Signal
Today's developments split into two clear currents reshaping the profession. First, the tax and regulatory landscape is fracturing: Washington State's new millionaires tax faces an immediate legal challenge led by heavyweight former officials, the IRS is operationalizing Opportunity Zone nominations under the One Big Beautiful Bill Act, a Pew report quantifies billions in uncollected state taxes with no measurement infrastructure, and the Social Security tax relief sunset debate is already generating political blame-shifting ahead of 2028. These are not abstract policy debates — they will drive client advisory conversations, planning strategies, and compliance workloads for years. Second, technology is no longer adjacent to accounting — it's embedding inside it. Gusto pushing payroll into Slack and Claude, Trintech deploying agentic AI across the financial close, and Zone & Co acquiring Sudozi to collapse the gap between decision and transaction all signal that AI is moving from back-office experiment to front-line workflow tool. Meanwhile, EisnerAmper's acquisition of KLG expands forensic and valuation capabilities at a Top 15 firm, and a 12-year prison sentence in the nation's largest COVID-19 tax fraud case sends a sharp enforcement message. The profession is being reshaped simultaneously from the policy side and the technology side.
Stories
ILawsuit Filed to Block Washington State's Millionaires Tax, Led by Former AG and Supreme Court Justice
A lawsuit was filed to block Washington's new millionaires tax on behalf of several business owners and organizations. The legal team is led by former Washington Attorney General Rob McKenna and former state Supreme Court Justice Phil Talmadge — lending significant legal credibility to the challenge. (CPA Practice Advisor, April 9, 2026)
Impact · Washington State has been incrementally expanding its tax reach — first the capital gains excise tax, now a millionaires tax. If the lawsuit succeeds, it reinforces constitutional limits on state income-style taxes in Washington and could chill similar efforts elsewhere. If it fails, CPAs advising high-net-worth clients in Washington face a new layer of state tax planning. Either outcome will ripple into multi-state planning strategies for clients with Washington nexus.
Action
Flag this case for any clients with significant income or business activity in Washington State. Begin scenario planning for both outcomes — the tax surviving or being struck down — so advisory conversations are proactive rather than reactive.
IIIRS Issues Guidance for Opportunity Zone Nominations Under One Big Beautiful Bill Act
On April 6, the Treasury Department and IRS issued guidance providing states, DC, and territories with procedures to nominate population census tracts for designation as qualified opportunity zones under the One Big Beautiful Bill Act. This launches a new round of OZ designations beyond the original 2017 TCJA zones. (CPA Practice Advisor, April 9, 2026)
Impact · A fresh cycle of Opportunity Zone designations means new investment vehicles, new capital gains deferral opportunities, and new advisory work for CPAs serving real estate investors, fund managers, and high-net-worth clients. Firms that built OZ practices after 2017 should prepare to scale them again. State-level nomination decisions will determine which geographies benefit — creating localized advisory demand.
Action
Contact state economic development offices to understand their nomination timelines and criteria. Begin identifying clients with unrealized capital gains who could benefit from new OZ investments once designations are finalized.
IIIPew Report: States Missing Billions in Unpaid Taxes With No Way to Measure the Gap
A new Pew Charitable Trusts report finds that states are losing billions in unpaid tax revenue, but few states have any mechanism to measure how much is actually being lost — a stark contrast to the IRS, which publishes a federal tax gap estimate. (CPA Practice Advisor, April 9, 2026)
Impact · This report will likely accelerate state-level enforcement and audit activity as legislatures look for revenue without raising rates. For CPAs, this means increased state audit exposure for clients and growing demand for state tax compliance advisory services. States that begin measuring their tax gaps will inevitably follow with enhanced collection efforts.
Action
Audit your clients' state tax compliance posture now, particularly in states facing budget pressure. Proactively identify exposure areas before states ramp up enforcement — nexus questions, use tax obligations, and pass-through entity reporting are likely first targets.
IVGusto Launches Payroll Inside Slack and Anthropic's Claude AI
Gusto announced April 8 the launch of payroll functionality inside Slack and Anthropic's Claude AI, embedding a compliance-heavy function directly into collaboration platforms where teams already work. (CPA Practice Advisor, April 9, 2026)
Impact · This marks a meaningful shift: payroll — one of accounting's most regulation-bound functions — is now accessible through AI chat interfaces and team messaging tools. For CPA firms offering payroll services, this raises competitive pressure from embedded, self-service solutions. It also raises compliance questions about data security, audit trails, and error handling when payroll runs through AI intermediaries.
Action
Evaluate how AI-embedded payroll tools like Gusto's new integrations affect your firm's payroll service offering. If you serve small business clients using Slack or Claude, understand what they can now do without you — and where your advisory value remains irreplaceable.
VNJ Tax Preparer Sentenced to 12 Years in Nation's Largest COVID-19 Tax Fraud Case
Leon Haynes, 52, of Teaneck, NJ, was sentenced Wednesday to 12 years in federal prison after being convicted in what prosecutors called the largest COVID-19 tax relief fraud case in the country. (CPA Practice Advisor, April 9, 2026)
Impact · The 12-year sentence is one of the harshest handed down for pandemic-era tax fraud and signals continued aggressive federal prosecution years after COVID relief programs closed. For the profession, this is both a deterrent and a reminder that the reputational and legal risks from pandemic-era engagements are still materializing. CPAs who inherited clients from other preparers during or after COVID should verify that prior filings — especially ERC and PPP claims — were legitimate.
Action
If your firm onboarded clients from other preparers during 2020-2023, conduct a retrospective review of any pandemic-era relief claims on their returns. Document your due diligence — the enforcement pipeline is still active and successor liability questions are real.