Taylor and Travis —with an INTENT on footing the BILL of average annual salary of $30.1 million for private flights and lodging for guests AND…..

He’s in luck, because billionaire Taylor and Travis — who this year became the NFL’s highest paid tight end, with an average annual salary of $17.1 million — “are intent on footing the bill for private flights and lodging for guests,” says the source. “Taylor’s waited a long time for this moment, so she has no problem going all out. They could end up spending as much as $3 million!”

As for Taylor’s nuptial attire? “She’s narrowed down her dream picks for her bridal gown and two other designer outfits,” shares the source. “She looked at a whole bunch of options from Versace, Vera Wang, Elie Saab and others.”

Before she slips into a white dress, Taylor ’s parents — Andrea, 66, a former mutual fund marketing executive, and Scott, 72, a former financial adviser — want “to make sure she and Travis have an iron clad prenup,” dishes the source. “It ’s been brought up in front of Travis, and he doesn’t seem to mind one bit.”

Taylor has zero doubt, either. “She’s even planning to surprise Travis by writing and performing a special song in honor of their big day,” spills the source. “Their wedding is going to be an event to remember, to say the least.”

They’ll invite family plus friends, like Paul McCartney, Stevie Nicks (“Taylor would love them to sing something,” adds the source), Ryan Reynolds, Ed Sheeran, Bradley Cooper, Gigi Hadid, Emma Stone, Sophie Turner and, of course, Taylor’s besties Blake Lively and Selena Gomez. “She’s torn on whom to choose as maid of honor,” notes the source. “Blake or Selena?” Taylor’s ex-boyfriend Taylor Lautner, with whom she’s remained pals, and his wife “will no doubt make the list, too,” says the insider.