First Quarter 2026 Interest Rates Stay Consistent
As of November 13, 2025, the IRS announced that interest rates on overpayments and underpayments for individuals will stay at 7% per year, compounded daily, beginning January 1, 2026. (irs.gov)
For corporations, overpayment rates and underpayment rates also remain the same. Large corporate underpayments stay at 9%, and overpayments exceeding $10,000 retain their current rates. (irs.gov)
Interplay with OBBB and Transitional Relief
- These interest rates will affect unpaid liabilities, late payments, or delayed refunds. Failure to pay on time when new reporting rules kick in can become expensive.
- With transition relief for OBBB’s tip and overtime reporting, some enforcement aspects are delayed — but interest accrues unaffected. Underpayments still trigger the standard interest. (irs.gov)
Practical Strategies to Avoid Unwanted Interest & Penalties
- Estimate your liabilities early: Avoid underpayment by using W-4 adjustments or making estimated payments, especially if you expect deductions or credits to change significantly in 2026.
- Refund timelines: Elect electronic refunds to avoid slow‐downs; understand that delays mean less benefit due to persistent interest rates for overpayments.
- Document any delays with cause: Natural disasters, pandemics, or other IRS-recognized relief events may delay deadlines without penalties—but interest often still applies.
Hypothetical Burden Illustration
- Example: Jessica owes an additional tax of $5,000 for TUY returns due April 2025, but doesn’t pay until August 2025. At 7% interest, she ends up owing ≈ $175 extra from interest alone for those months.
- For businesses: if a corporate return underreports by tens of thousands, interest becomes material, and loss of cash flow can be stressful.
Bottom Line for Digital Nomads & Entities Setups
Whether you're a remote worker, nomad, contractor, or setting up a new business: anticipate cash flow needs to meet your tax, retirement, and reporting obligations. Interest rates are not decreasing — so prevention is always cheaper than remediation.