The Federal Reserve and the Treasury announced $800 billion in new lending programs on Tuesday, sending a message that they will print as much money as needed to revive the crippled banking system.

The two new efforts  one mainly to finance loans for consumers, and an even bigger one to push down home mortgage rates  marked the latest but hardly the last of the federal government’s efforts to shoulder the losses that began with subprime mortgages and have spread throughout the economy.

All told, the government has assumed at least $7 trillion in direct and indirect financial obligations in the form of Wall Street bailouts, emergency lending and government guarantees on bank deposits, inter-bank loans and home mortgages.

Image President-elect Barack Obama on Monday in Chicago with three new members of his economic team, from left, Timothy F. Geithner, Christina D. Romer and Lawrence H. Summers. Credit... Pablo Martinez Monsivais/Associated Press

The new actions on Tuesday represented two big milestones in the government’s expansion into private markets.