Kate Gosselin -- CLIPPED from Coupon Gig

Kate Gosselin has just been FIRED from her job as a coupon blogger ... after her boss decided the ex-reality star was no longer a "good fit" for the company.

Gosselin has been working for CouponCabin.com -- dishing out advice to bargain hunters. But today, Founder & CEO Scott Kluth posted an open letter on his website announcing Kate had been sacked.

In the letter, Kluth explains ... "A series of recent events have made it clear to me that Kate Gosselin and her contributions do not align with the authenticity which we set out to build almost a decade ago."

He adds, "Ms. Gosselin is simply not a good fit with the wonderful team and culture at CouponCabin."

Despite the public shaming, Kluth insists, "We wish Kate, her family and her support staff all the best."