The phrase "a substantial amount to" is correct and usable in written English.
It can be used when discussing a significant quantity or degree of something, often in contexts related to finance, resources, or effort.
Example: "The project required a substantial amount to complete, but the results were worth the investment."
Alternatives: "a considerable sum to" or "a significant quantity to".
"Southern Cross Austereo has contributed a substantial amount to a trust which was recently established to assist Ms Saldanha's family.
From 1935 copper prices rose sharply, and by 1938 Northern Rhodesia contributed a substantial amount to the world's total output of copper.
Dan McLagan, a spokesman for Mr. Lazio, said the campaign had spent a substantial amount to broadcast the advertisement across the state, but he refused to provide a dollar figure, calling it confidential information.
Under rules of public financing, a candidate has access to $85 million from a taxpayer-financed fund for the general election, a substantial amount to spend for the roughly two months after this year's conventions.
"We're not trying to sell hamburgers by this," Mr. Clouser said, adding that the company and its franchisees had made "very significant cash donations" to the Red Cross in addition to the company's spending a "substantial amount" to run the campaign.
"When you look at the flat land, and the amount it would cost to excavate and remove the dirt, the cost of the foundation to build a basement just adds a substantial amount to the cost of a new home," Mr. McCarty said.
"That's a fairly substantial amount to produce yourself and beyond the opposition in its wildest dreams," he said.
That debate would be tied to a proposal to increase the debt limit by a much more substantial amount to last through 2010.
"It turns out that even a modest reduction in the cost of making remittance transfers adds up to a substantial amount compared to official aid".
Some went to housing and school expenses, but a substantial amount went to my "living expenses". What does that even mean?
"This is a way to complement our other funding and make sure a substantial amount goes to artists," said Joel Wachs, the Warhol Foundation's president.
