The party hopes to put the "mansion tax" proposals to a vote either before the Budget in an opposition day debate or through an amendment to the Budget-implementing Finance Bill.
"It's time for Nick Clegg and the Liberal Democrats to be honest with the people of Eastleigh and show whose side are they on," Mr Miliband is expected to say during his visit.
"They must answer this question: will they vote with Labour in advance of the Budget to force David Cameron and George Osborne to act.
"Or will the Liberal Democrats do what they've done for two-and-a-half years: prop up a Tory Government that is squeezing the living standards of the middle harder and harder?"
Tory backbenchers have been campaigning for the 10p rate to be reintroduced in next month's Budget, and the Prime Minister hinted earlier in the week that he was ready to agree.
More top news
With temperatures peaking at 29C today, it is the hottest April day for nearly 70 years.
Russian trolls are behind a disinformation campaign about chemical weapons attacks in Syria and Salisbury, a government source has said.
Decontamination work is to begin at nine sites across the city.