According to FAQ page on the IRS website, recipients may have to wait three to four weeks to receive their payments in the mail, but it’s unclear why payments that are already in circulation would take that long. First-class mail via the United States Postal Service—which is how these payments are being sent—typically only takes a few days, although the post office makes no guarantees about delivery timelines and bottlenecks in the distribution process often cause delays. … [Read more...] about IRS stimulus checks: Painfully slow mailed-out payments frustrate many Americans