Everything we've learned about starting and running a US business — written down as we go. Plain-English guides on addresses, LLCs, taxes, and the paperwork nobody warns you about.

USPS retired its free Web Tools API on January 25, 2026, and the old public CMRA lookup went with it. Banks, landlords, and LLC filing offices still read the CMRA flag on every application. Here is what changed, why the flag still decides whether your bank application clears, and how to run the same check for free in under 30 seconds.
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