Filmmaker Gavin O’Connor says the Ben Affleck-led action series was always meant to be three movies.

It’s not as certain as death and taxes, but it seems like a thirdAccountantfilm is coming due.

Bernthal plays his formerly estranged brother, Brax, a clingy hitman with a short fuse.

Ben Affleck and Anna Kendrick in the Accountant

Anna Kendrick and Ben Affleck in “The Accountant”.Credit:Chuck Zlotnick/Warner Bros.

“We always wanted it to be three movies,” O’Connor tellsEntertainment Weekly.

We wanted a love story with brothers.

We wanted to do a48 HoursorMidnight Runkind of buddy picture."

Christian Wolff (Ben Affleck) and Brax (Jon Bernthal) in THE ACCOUNTANT

Ben Affleck and Jon Bernthal in ‘The Accountant 2’.Courtesy of Amazon MGM Studios

So that was very intentional."

I don’t know what that’s going to be yet, but that’s the intention."

I mean, how do I bring Anna into the second and then ignore her?"

Christian Wolff (Ben Affleck) and Brax (Jon Bernthal) in THE ACCOUNTANT 2

“The whole point was exploring the brothers and that emotional line between them.

That was always the intention, so she was never going to be in the second.”

“We’ve had conversations.

Christian Wolff (Ben Affleck)

She wants to do it.

We just have to figure out how to do it,” he says.

Todd Williamson/Getty

Still, that might take some time.

Gavin O’Connor and Ben Affleck attend the Premiere Of Warner Bros Pictures' “The Accountant” on October 10, 2016 in Hollywood, California.

Gavin O’Connor and Ben Affleck attend the Hollywood premiere of “The Accountant” on Oct. 10, 2016.Todd Williamson/Getty

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Or, maybe O’Connor will go a completely different direction next time.

So it probably will be with Dana Cummings."