WASHINGTON — The financial outlook for Medicare and Social Security, two of the nation’s most important social safety net programs, remains precarious, threatening to diminish retirement payments and increase health care costs for Americans in old age, the Trump administration said on Monday.

An annual government report on the status of the programs painted a dire portrait of their solvency that will saddle the United States with more debt at a time when the economy is starting to cool and taxes have just been cut.

According to the report, the cost of Social Security, the federal retirement program, will exceed its income in 2020 for the first time since 1982. The program’s reserve fund is projected to be depleted in 16 years, at which time recipients will get smaller payments than they are scheduled to receive if Congress does not act.

Meanwhile, Medicare’s hospital insurance fund is expected to be depleted in 2026 — the same date that was projected a year ago. At that point, doctors, hospitals and nursing homes would not receive their full compensation from the program and patients could face more of the financial burden.