Eligible residents who live in Washington State will have a new benefit available to them starting in 2025: a $100-per-day allowance for a variety of long-term care services, which will last up to a year.

The money will come from a payroll tax that begins in 2022, according to rules in a bill that the state’s governor signed Monday. Residents’ employers will put 0.58 percent of their paychecks — $290 for every $50,000 in income — into a state fund. Washington does not have a state income tax.

According to the National Conference of State Legislatures, no state has passed such sweeping coverage for long-term care, including nursing home fees, in-home assistance and reimbursing family members for care they provide.

The question of who pays for seniors’ care is becoming increasingly urgent. Baby boomers are retiring. One recent study found that the majority of middle-income seniors will not be able to afford all of their assisted-living fees by 2029. If recent trends continue, their bills will increasingly be borne by taxpayers.