ATHENS, Greece (AP) — Greece's economic reforms plan includes "harsh" measures the government would not have proposed had it had a choice, a spokesman said Tuesday.

The country this week offered a series of measures, including multiple tax increases, to persuade its creditors to release bailout funds and keep the country from defaulting on its debts as soon as next week.

The creditors, which include other eurozone states and the International Monetary Fund, have demanded reforms that aim to make Greece's public finances sustainable and keep the country from slipping back into the bad habits of overspending that led it into its financial crisis.

But Athens has argued they are needlessly harsh for the broader economy, which has shrunk by a quarter in the last five years and seen unemployment rocket to 25 percent.

After a series of meetings in Brussels on Monday, European creditors said the new proposals offer a good basis to break a four-month deadlock and reach an agreement this week.

Ministers needed to make "one last push" to finalize the deal, French Finance Minister Michel Sapin said Tuesday. Eurozone finance ministers are due to meet again on Wednesday evening ahead of a European leaders' summit that starts Thursday.

Sapin said Greece had made new proposals. "These are tangible elements we can work with in an efficient way to reach an agreement," he said.

"Now we have to finish the work, verify the figures, verify the measures. We need one last push (Wednesday) night so that the heads of state can sign off on the agreement. That is the time frame that seems most reasonable and that we can achieve."

The IMF sounded less optimistic, with its head, Christine Lagarde, saying Monday night that the suggestions were "still short of everything that we expected."

Hopes that a deal was at hand boosted markets for a second day. The Stoxx 50 index of European shares was up 1.4 percent, adding to the previous day's big gains of 4.1 percent. In Athens, the stock exchange was up 4.5 percent in early afternoon trading, after closing up 9 percent on Monday.

Helping sentiment was the news that the European Central Bank had increased the amount of emergency liquidity it allows Greek lenders to draw on. It is the fourth time in a week it does so, in an effort to help the banks withstand a rise in cash withdrawals from worried Greeks.

Depositors pulled an estimated 4 billion euros ($4.5 billion) out of banks last week ahead of the Brussels meetings.

Greece's proposal includes up to 8 billion euros worth of measures, including increases to consumer taxes, extra taxes on individual incomes of more than 50,000 euros per year and more taxes on companies.

"There is full comprehension that there are measures in the proposal that are harsh, and they are measures that under different circumstances, if it was up to us there was no way we would have taken," government spokesman Gabriel Sakellaridis told private Greek television station Antenna.

Prime Minister Alexis Tsipras' radical left Syriza party won January elections on promises of repealing the harsh austerity measures successive governments have imposed in return for bailouts worth 240 billion euros since May 2010.

But with creditors withholding the final 7.2 billion in rescue loans and state coffers running dry in Greece, Tsipras has been forced to backtrack on many pledges in the hope of securing a deal that will prevent a default on Greece's debts and a messy exit from Europe's joint currency. Greece faces a 1.6 billion euro repayment to the IMF on June 30, which it cannot afford.

Sakellaridis noted that the proposed measures seek to increase taxes on those with higher incomes rather than on low-income families, salaried employees and pensioners.

But Tsipras might face problems getting all of the government's lawmakers, which include members of a smaller nationalist party, to sign off on the deal when it is brought to parliament.

Despite possible losses from the governing coalition, the deal is likely to pass with votes in favor from opposition parties.

Still, significant dissent from within government ranks would be a blow to Tsipras and is likely to lead to early elections.

"Each person will assume their own responsibilities" during a vote, Sakellaridis said.

"Clearly a government that doesn't have the confidence of its deputies can't stand up. But I don't think we'll get to this point," the spokesman said, adding that "the only choice in this case would be a recourse to the polls and to the Greek people."