The last estimated tax payment for 2026 is due January 15, 2027. Here is how the safe-harbor rules work, how Maryland’s payments fit in, and a December check that tells you whether you are short.
The federal cap on state and local tax deductions jumped from $10,000 to $40,000 in 2025 and rises again to $40,400 for 2026. For Maryland and Montgomery County households, that can change whether itemizing beats the standard deduction. Here is how it works and what to do before December 31.
The HAMTOCK letter
One short email a month: what is due, what changed, and what to do about it. Written by our team in Silver Spring.
The HAMTOCK letter
One short email a month: what is due, what changed, and what to do about it. Written by our team in Silver Spring.
Three quick steps. We reply within one business day. Please don’t include Social Security or account numbers here; you’ll share documents later through the secure client portal.
