Fractional CFO for Private-Duty Home Care Agencies: Bill-Pay Spread, Overtime, and Payroll Cash

Bill-pay spread is the bill rate minus the caregiver's hourly pay. It's the number every private-duty home care owner knows, and it's the wrong number to manage by. A $36 bill rate and a $19 pay rate is a $17 spread, but after payroll taxes, workers' compensation, overtime, and hours you pay for but can't bill, the agency may keep closer to $10.

A fractional CFO for home care agencies works from margin per billed hour, not spread. Then it plans for the two things that can break a private-duty agency: overtime cost and weekly payroll paid ahead of slower collections.

From spread to margin per billed hour

Here's the waterfall for a hypothetical agency billing $36 an hour with a $19 average caregiver pay rate:

Then the office takes its share: schedulers, care coordinators, recruiting, intake, billing, rent, and software. If that runs $6.50 per billed hour, operating margin before owner pay is about $3.75, or around 10%.

Three things this table makes obvious:

1. Every $1 of pay increase needs about $1.16 of bill rate to hold the same dollar margin, because payroll tax and workers' comp add roughly 16 cents to each wage dollar in this example.
2. Overtime and unbilled time together cost more than the employer tax line in this example. Those are scheduling problems, not accounting ones.
3. Office cost per billed hour falls as hours grow, which is why hours per client and total billed hours matter as much as the rate.

Wages set the floor. BLS reports the median wage for home health and personal care aides at $17.21 an hour in May 2025, with employment projected to grow 18% from 2025 to 2035. Local markets vary widely, so price from your own recruiting data, but a growing occupation with a modest median wage means competition for caregivers isn't going away.

Overtime: the federal rule is unsettled, so plan for both

This is the most consequential open question in private-duty finance right now.

The Department of Labor's 2013 final rule barred third-party employers such as home care agencies from claiming the FLSA companionship services exemption or the live-in domestic service exemption. That rule is why agencies have paid federal overtime to caregivers since it took effect.

In 2025 the picture changed. DOL published a proposed rule on July 2, 2025 to rescind those regulations. Then Field Assistance Bulletin 2025-4, dated July 25, 2025, told Wage and Hour Division staff how to handle home care enforcement until the effective date of any final rule. The bulletin states that the 2013 rule is still the department's current regulation.

So as of this writing, the regulation and the federal enforcement posture point in different directions. That doesn't make overtime optional. State wage laws may require overtime regardless of the federal exemption. Private lawsuits under the FLSA aren't controlled by an internal enforcement bulletin. And a final rule could change the answer again.

The Bennett decision rule is conservative on purpose: budget overtime as payable at time and a half unless your employment counsel confirms in writing that an exemption applies in your state, to your caregivers, for the duties they actually perform. Then manage overtime through scheduling, not classification.

Here's why it matters. A hypothetical live-in or 24-hour client scheduled with one caregiver for 56 hours a week at $19 has 16 overtime hours. The premium alone is $152 a week, nearly $7,900 a year for one client. Splitting the schedule between two caregivers at 28 hours each removes it, at the cost of more coordination and a second caregiver to retain.

The overtime profitability test is built for field service, but its incremental-margin logic works for home care schedules too.

In the waterfall above, overtime and unbilled hours are the two biggest lines a scheduler can actually change. A Leak Check focused on your spread and scheduling cost shows how much of your own gap between spread and margin is fixable.

Payroll cash: weekly pay, slower collections

Caregivers are usually paid weekly or every two weeks. Clients pay on their own schedule.

Weighted, this hypothetical agency waits about 22 days for its money. With $85,000 of weekly payroll, that's roughly $270,000 of payroll funded before the matching revenue arrives. Grow billed hours 20% and the gap grows by about $53,000, before any extra recruiting or office cost.

That's why profitable home care agencies run short of cash during growth. The fixes are usually:

• Card or ACH on file for private-pay clients, charged on a fixed day each week.
• Long-term care insurance claims submitted on a schedule, with the documentation insurers require, so claims aren't returned.
• A payroll reserve sized to at least one full pay cycle, held separately from operating cash.
• A 13-week cash forecast that shows each payroll date against expected collections. The 13-week forecast guide walks through the build.

The payroll-funding problem is similar to the one staffing firms face, covered in the guide to managing payroll funding for contract staffing.

The operating numbers worth a weekly look

Private-duty agencies are hour businesses. These are the measures Bennett would review weekly, not monthly:

• Billed hours per week, total and per client.
• Hours per caregiver per week. Too low and caregivers leave for agencies that offer more hours; too high and overtime appears.
• Hours lost to unfilled shifts. Every hour a client wanted and you couldn't staff is revenue you sold and didn't deliver.
• Caregiver turnover, annualized, with recruiting and orientation cost per hire.
• Minimum shift length compliance. If your policy is a four-hour minimum, how many shorter shifts slipped through?
• Labor efficiency. Bennett's ratio is recognized revenue divided by delivery payroll, with a 3.5x target set for $2M–$20M service businesses. In the waterfall above, revenue per billed hour is under 2x caregiver payroll cost, so a private-duty agency should track the trend against its own baseline rather than the target. The labor efficiency research explains why the definition matters more than the target here.

What changes in the first three months

By the end of month one, you should be able to answer: what is our true gross margin per billed hour, by payer type? That means a rebuilt chart of accounts with caregiver wages, taxes, workers' comp, and unbilled time in cost of care, reconciled to the scheduling and payroll systems, and one clean close.

By the end of month two: where is overtime coming from, and what does it cost by client? The CFO maps scheduled versus worked hours by caregiver, prices overtime under the conservative budget rule, and builds a bill rate test showing what each client needs to hold margin. The tax plan starts here too.

By the end of month three: can we fund growth without a payroll scare? The answer comes from a 13-week cash forecast, a sized payroll reserve, a collection plan by payer, and a monthly KPI review.

That work sits inside Bennett's fractional CFO services, from $5,000 a month with bookkeeping and tax included. Agencies with Medicare-certified skilled services should also read the home health CFO guide, since reimbursement works very differently there.

Your next calculation: take last month's billed hours and total cost of care, and divide. If margin per billed hour is less than 60% of your average spread, the leak is in scheduling, overtime, or unbilled time, and a Leak Check built around your bill rates and payroll calendar is a fast way to find which.