A permanent resident card expiration does not end your lawful status in the U.S., but it creates immediate, real-world problems with employment verification, international travel, and re-entry at the border. Most green card holders should file Form I-90 six months before expiration, while conditional residents on a 2-year card must file Form I-751 within a strict 90-day window. USCIS processing in 2025 runs 8 to 24 months, but a receipt notice extends your card’s validity by 24 months in the meantime. This guide breaks down exactly which form applies to your situation, what the renewal costs, what documents you need, and the common mistakes that cause delays. It also covers when pursuing naturalization might be smarter than renewing, and what your rights are with employers during the waiting period.