Reforms have reduced by some 32 percent the estimated amount of funds the government needs to inject into 31 public corporations from its fiscal investment-and-loan program to complete existing projects, according to a government-commissioned report released Tuesday.

Coupled with lower interest rates, the amount the government needs is estimated at 7.51 trillion yen, according to the report compiled by a Fiscal System Council subcommittee. The figure is down 3.54 trillion yen from last year's estimate of 11.06 trillion yen.

Of the 31 entities under the fiscal investment-and-loan program, or FILP, Japan Highway Public Corp. needs 1.79 trillion yen over the next 46 years, instead of the 3.46 trillion yen over 51 years estimated last year, the report says.