Masstaxpayers.org is the official website of the Massachusetts Taxpayers Foundation, a respected nonprofit that researches state fiscal policy. With a domain history stretching back to 1997 and a staff and board listed openly, this is clearly a real institution — not a fly-by-night operation. But there are a couple of things to keep in mind if you're thinking about engaging with them.
Most legitimate nonprofits of this size have standard legal pages like a privacy policy and terms of service, especially if they accept membership fees or donations. Masstaxpayers.org appears to be missing at least one of those. That's worth a quick check before you submit any personal or payment information. The site also loads a large number of external scripts (100 total), which could be tracking tools or analytics. It's not unusual for a site to use third-party services, but it's high enough to wonder what all of them are doing.
On the positive side, the site is encrypted, has contact info and social media links, and shows no signs of malware or blacklisting. So while masstaxpayers.org is not the most modern or perfectly compliant website, it's almost certainly a legitimate nonprofit — and not a scam or fake.