The short answer: two numbers, not one
Ask what payroll costs for 50 carers and you are really asking two questions. One is what it costs to run the payroll, meaning the fee for actually processing it. The other is what it costs to fund the payroll, meaning the cash that leaves your account every week to pay people. The first is a few hundred pounds a month. The second is over a million pounds a year. Owners who only budget for the first are the ones who end up surprised.
Start with the funding number, because it dwarfs everything else. Take a fairly typical agency: 50 carers, each paid for around 30 hours a week, which in domiciliary care means roughly 25 hours of contact time at the door plus about 5 hours of travel time between calls. At the 2025/26 National Living Wage of £12.21 an hour, that is a gross wage bill of about £953,000 a year. Add holiday pay, employer National Insurance and pension, and the true cost lands near £1.2 million. We break that build-up down in the next two sections.
Now the running cost. Processing payroll for 50 carers starts from around £6 per employee per month if you pay monthly, so roughly £300, and rises to £450 to £600 if you run weekly pay, because there are four to five times as many pay runs to process. A specialist care sector accountant who also handles your bookkeeping and compliance will usually fold payroll into one package rather than billing it twice. For the wider picture on fees, our guide to how much an accountant costs for a domiciliary care provider covers the full service, not just the payroll slice.
The reason this matters for a care agency specifically is regulation. Every carer on your payroll is part of a Care Quality Commission (CQC) registered service, and every hour you pay has to clear the legal minimum wage once travel time is counted. HMRC runs targeted minimum wage enforcement in social care. The payroll is not just a cost. It is a compliance surface, and it is the one HMRC looks at first.
What sits on top of a carer's hourly rate
The hourly rate on the payslip is only the start of what each carer costs you. On top of the gross wage sit four extra layers, and together they add roughly 30 to 50 percent to the headline contact-hour rate. Here is each one, with the 2025/26 figures.
Travel time. Time a carer spends travelling between calls during a shift is working time, and it must be paid at least the minimum wage. For a carer doing 25 contact hours, another 5 hours of paid travel a week is common in a spread-out round. That travel is not billable to the client or the council, but you still pay it, so it adds about 20 percent to the contact-hour wage before anything else is layered on. Mileage reimbursement is separate again: 45p a mile in 2025/26, rising to 55p for the first 10,000 miles from April 2026.
Holiday pay. Every worker is entitled to 5.6 weeks of paid holiday a year. For variable-hours carers the standard method accrues holiday at 12.07 percent of the hours they actually work, so on a £953,000 gross wage bill you are funding around £115,000 of holiday pay on top.
Employer National Insurance. You pay employer NIC at 15 percent on each carer's earnings above the £5,000 secondary threshold. That threshold was cut from £9,100 and the rate rose from 13.8 percent in April 2025, which hit labour-heavy businesses like care agencies hardest. The 2026/27 employer rates published by HMRC keep the 15 percent rate and the £5,000 threshold frozen. The one relief is the Employment Allowance, which knocks £10,500 a year off your total employer NIC bill.
Pension. Carers who qualify for auto-enrolment must get an employer pension contribution of at least 3 percent of their qualifying earnings. Across 50 carers that is roughly £22,000 a year. You also have a re-enrolment duty every three years, which we come back to in the traps section.
None of these is optional and none is exotic. They are simply the parts of the cost that do not appear on the rate you advertise to recruit, which is exactly why agencies that price on the bare hourly rate end up squeezing their own margin.
How £12.21 an hour becomes £1.2 million a year
Every layer of cost stacks onto the last, so the cleanest way to see the real number is to build it up step by step. The chart below does exactly that for our 50-carer agency over a full year in 2025/26.
The single most useful figure to carry around is the multiplier. For this agency, £794,000 of contact-hour wages turns into about £1.2 million of real cost, so every pound you pay a carer for time at the door costs you roughly £1.50 once the round trip is funded. The Homecare Association, the trade body for the sector, builds the same maths the other way: its Minimum Price for Homecare for 2025/26 is £32.14 an hour, the rate it says a council or the NHS has to pay so that a £12.21 wage can be delivered sustainably once travel, training, on-costs and a small surplus are included. If your fee income per contact hour sits well below that, the gap is coming straight out of your margin.
What it costs to run the payroll for 50 carers
Running payroll for 50 carers costs from around £300 to £600 a month, and the swing depends almost entirely on how often you pay. Weekly pay, which most domiciliary agencies use because carers want it, means roughly 50 payslips a week, or more than 200 a month, against around 50 a month for a monthly cycle. Every extra pay run is more processing, more checking and more chance of an error to catch, so weekly always costs more than monthly to run.
Pricing usually works one of two ways. A pure payroll bureau charges per payslip or per employee, typically from £6 a head per month for monthly pay, scaling up for weekly. A specialist accountant who also keeps your books will often price the whole engagement as one monthly fee, because the payroll figures feed straight into the management accounts and the year-end, so doing them separately just duplicates work. For a 50-carer agency that second route is usually both cheaper and cleaner.
At LOYALS, a domiciliary care agency of 30 to 100 carers gets payroll, bookkeeping and compliance from £549 a month, with larger agencies of 100-plus carers from £999. That covers the weekly pay runs, the pension administration, the travel-time minimum wage checks, the VAT position and monthly management accounts that show the loaded cost per care hour. Our payroll and PAYE service is built for exactly this kind of high-headcount, variable-hours operation rather than a handful of salaried staff.
The minimum wage traps that turn payroll into an HMRC bill
The biggest payroll risk for a care agency is not the fee, it is paying below the minimum wage by accident and getting caught. HMRC can recover up to six years of arrears, charge a penalty of up to 200 percent of those arrears, and name the employer publicly. In social care the three traps below cause most of the failures.
Unpaid travel time. This is the classic. If a carer is paid £12.21 an hour for contact time but their travel between calls is unpaid, their average pay across the whole working period can dip below the legal minimum, even though the headline rate looks compliant. HMRC averages pay over the pay reference period, so a high contact rate cannot rescue unpaid travel. The government guidance on calculating the minimum wage is explicit that travel between assignments counts. We cover the detail in our guide to domiciliary care mileage and travel time.
Minimum wage averaging on short calls. Short 15 and 30-minute calls carry a higher proportion of travel and handover time per paid hour, so a round built around them is far more likely to average below the minimum than a round of longer visits. Agencies that grow on short council-funded calls without modelling the travel-loaded rate per carer are the ones that fail a check.
Pension re-enrolment. Auto-enrolment is not a one-off. Every three years you must re-enrol eligible carers who previously opted out and re-declare to The Pensions Regulator. Miss the re-enrolment date and you can face penalties, plus backdated contributions. Agencies that set the scheme up at launch and never revisit it routinely sail past the deadline.
For a care provider, the regulator never sits far from the payroll. CQC judges whether your service is well-led and financially sustainable, HMRC judges whether every hour clears the minimum wage, and The Pensions Regulator judges your auto-enrolment. A generalist who runs the numbers but does not know the travel-time rule can produce a payroll that balances perfectly and still breaks the law.
Here is how the three common ways to handle care agency payroll actually compare:
| What a 50-carer agency needs | DIY / software | Generic accountant | LOYALS specialist |
|---|---|---|---|
| Checks travel time keeps every round above minimum wage | ✗ You self-check | ● Rarely | ✓ Every pay run |
| Models the loaded cost per care hour, not just the rate | ✗ | ● If asked | ✓ Monthly accounts |
| Tracks pension re-enrolment dates and re-declaration | ✗ | ● | ✓ Diarised |
| Handles high-volume weekly pay for 50-plus carers | ● Time-heavy | ● Surcharged | ✓ Built in |
| Reads CQC viability and fee income against the wage bill | ✗ | ✗ | ✓ Care specialist |
| Open Mon to Sat for urgent payroll questions | ✗ | ✗ Mon to Fri 9 to 5 | ✓ 10am to 7pm Mon to Sat |
This is why domiciliary care agencies past about 20 carers tend to move from a generic accountant to a care sector specialist.
In-house versus outsourced for a care agency
For 50 carers, outsourcing payroll is almost always cheaper once you count the true cost of doing it in-house. A part-time payroll administrator costs £14,000 to £18,000 a year in salary alone, before employer NIC, pension and holiday on their own wage, before payroll software, and before the cost of cover when they are off. Set against an outsourced fee of £300 to £600 a month, the in-house route rarely wins on cost at this size.
The decisive factor is usually risk, not headline price. One travel-time miscalculation applied across 50 carers for a year can generate tens of thousands of pounds of minimum wage arrears, a penalty on top, and a public naming that does real damage when families and councils are choosing a provider. An in-house administrator carries that risk alone. A specialist carries professional indemnity and, more usefully, knows where the trap is before you step in it.
In-house can make sense once an agency is very large, with a finance function that includes payroll specialists and a dedicated system. Below that, the maths and the risk both point the same way. The honest answer for most 50-carer agencies is that outsourcing to someone who understands care, not just payroll, is both cheaper and safer than building it internally.
What this means for you: what to do before April 2026
The most time-sensitive action this year is pricing in the April 2026 wage rise before it lands. The National Living Wage goes from £12.21 to £12.71 an hour on 1 April 2026. For 50 carers working around 78,000 paid hours a year between them, that 50p adds about £39,000 to the raw wage bill, and close to £50,000 once holiday pay, employer NIC and pension stack on top. If your council and private fee rates do not already reflect it, you are about to absorb that yourself.
Beyond the rise, the practical checklist is short and worth doing now.
- Confirm travel time is paid on every round. Pull a sample of carers on short-call rounds and check their average pay across the whole shift, not just the contact rate. This is where HMRC looks first.
- Check your pension re-enrolment date. If it has been three years since you set the scheme up, the re-enrolment and re-declaration may already be due.
- Know your loaded cost per care hour. If your management accounts only show wages, you cannot see the real margin. Ask for the fully loaded figure including travel, holiday, NIC and pension.
- Price the April 2026 rise into your fee negotiations now. Local authority rates are set ahead of the year, so the conversation has to happen before, not after.
- Decide who runs it. If payroll is eating your evenings or you are not certain it is compliant, get a fixed quote for outsourcing it to a care specialist.
None of this is complicated. It is the difference between a payroll that quietly protects your margin and your CQC standing, and one that drifts into an HMRC problem you only discover when the letter arrives.