The 44-year-old fashion designer opened up about their marriage ahead of their 20th wedding anniversary this July.
“David is such a great husband, such a great dad and the most incredible business partner that anybody could ever want,” she told Entertainment Tonight.
“He really supports me in what I do.”
When asked how the couple will be celebrating the milestone anniversary, Beckham revealed it is likely to be a low-key affair.
“I don’t think [we’ll do anything big]. We’ll probably just celebrate with the kids.”
The comments follow rumours that her and David were on the brink of divorce last year.
After a number of media outlets reported that the pair were to split, bookmakers had suspended betting on the couple separating.
Following the reports, the Beckhams called the rumours "embarrassing and laughable".
During the interview, the former Spice Girl also talked about launching her own YouTube channel at London Fashion Week (LFW), where she gives a behind the scenes glimpse into life as a fashion designer.
When asked just how much she intends on sharing on the channel, Beckham joked:
“I mean, let’s be honest, I want to gain followers not lose them.
”So I will keep the nudity minimal… You do get to see inside my closet and how messy I really am.
“There'll be some family moments in there as well ‘cause my family is such a huge part of what I do."
She also took the opportunity to put an end to rumours that she will be joining the rest of the Spice Girls on tour this year.
“I couldn't do it and, you know, I’m so busy doing what I’m doing now,” she said.
“But I will always be a Spice Girl and I’m very excited to see what they are going to do. Every time I do an interview, I don't want to sound like, ‘Absolutely not.’ I don't want to be mean in any way.
“I love the idea of it but the reality is that it won't happen. They'll be great.”
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