Susie Wolff will extend her deal with Williams into the 2015 season, according to the German newspaper Bild.
The 31-year-old female Briton was the Grove team’s test driver this year, even appearing on a couple of Friday mornings.
"The contract for 2015 is close to being signed," said the newspaper’s correspondents Nicola Pohl and Helmut Uhl.
A former DTM and F3 driver, whose maiden name is Stoddart, Wolff’s husband is Toto Wolff, the Mercedes team boss and still a significant Williams shareholder.
Bild said her 2015 programme will involve two test days and two further outings during Friday morning practice sessions.