IRS roundup: June 10 – June 21, 2026

Short summary

The IRS experienced significant workforce losses in 2025, with 40% of departing employees having over 11 years of experience, raising institutional knowledge concerns. Treasury updated energy community bonus credit designations effective June 10 and simplified foreign currency tax election procedures for controlled foreign corporations. Tax Court upheld research credit claims for architectural firms retaining intellectual property rights and affirmed IRS Appeals' authority in imposing liens when taxpayers withhold financial documentation.

• •IRS workforce reductions triggered concerns about loss of institutional expertise, with 85% of departing staff having at least one year of service
• •Treasury Notice 2026-39 updated energy community credit designations; proposed regulations simplify § 987 foreign currency rules for corporate compliance
• •Tax Court cases affirm research credit eligibility for design firms and sustain IRS lien authority in collection disputes

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