The Commons standards and privileges committee said the senior Tory MP had accepted its findings and "will pay back the misapplied sums".
Mrs Spelman who had denied any wrong-doing apologised unreservedly after the committee's report was published.
She said payments to Tina Haynes in 1997/8 had been for secretarial work.
The allegation was that she had worked primarily as a nanny while being paid as a part-time constituency secretary.
Mrs Spelman, MP for Meriden in the West Midlands and shadow communities secretary, had insisted Ms Haynes was only paid with public funds for secretarial work between 1997 and 1998.
Full story from the BBC.