Subcontracting is how most cleaning businesses scale past what one owner-operator can physically do. You land the client, and someone else — a solo cleaner, a small crew, or another company — does the work under your business name or as an independent partner. Done right, it's a fast way to grow. Done wrong, it's a fast way to get hit with back taxes, misclassification penalties, or a liability claim nobody's insurance covers.
This article covers the legal basics of subcontracting in a US cleaning business, with notes on UK equivalents where the rules diverge.
What "subcontracting" actually means here
In cleaning, subcontracting usually looks like one of two setups:
- You subcontract to someone else: You (an LLC or sole proprietor) hire another cleaner or cleaning company to fulfill a job you sold. You're the general contractor; they're the sub.
- You are the subcontractor: A larger cleaning company, property manager, or facilities firm hires you to service accounts under their contract.
Either way, the relationship needs to be a genuine business-to-business arrangement — not a disguised employment relationship. The IRS (and, in the UK, HMRC) cares a lot about this distinction, and getting it wrong is the single most common legal mistake in this space.
Independent contractor vs. employee: the line that matters most
If you treat someone as a 1099 subcontractor but actually control their schedule, provide their equipment, dictate exactly how they clean, and they only work for you — the IRS may reclassify them as a W-2 employee retroactively. That means back payroll taxes, penalties, and potential liability for unpaid overtime.
The IRS uses a facts-and-circumstances test built around three categories:
- Behavioral control: Do you dictate how, when, and with what tools the job gets done, or just the end result?
- Financial control: Does the sub set their own rates, invoice you, cover their own supplies/insurance, and work for other clients too?
- Relationship type: Is there a written contract describing an independent business relationship? Are they free to turn down jobs?
A genuine subcontractor should have their own business name or EIN, their own insurance, their own supplies (or a clear rental/reimbursement arrangement), and the ability to work for other companies. The more boxes you check, the safer your classification.
In the UK, the analogous test is IR35/employment status, assessed by HMRC based on control, substitution rights, and mutuality of obligation. The categories differ slightly but the underlying question — genuine independence vs. disguised employment — is the same.
Paperwork you need before the first job
1. A written subcontractor agreement
Never run this on a handshake. At minimum, the agreement should cover:
- Scope of work and standards expected (checklist-level detail helps if disputes arise)
- Payment terms and rate (per job, per hour, or per square foot)
- Insurance requirements (see below)
- Who supplies equipment and cleaning products
- Confidentiality and non-solicitation of your clients
- Termination terms and notice period
2. Form W-9 and Form 1099-NEC
Collect a completed W-9 from every US subcontractor before they start work — it gives you their Taxpayer ID or Social Security Number and confirms their business structure. If you pay a subcontractor $600 or more in a calendar year, you must issue them a Form 1099-NEC by January 31 the following year and file a copy with the IRS.
UK equivalent: if you're in construction-adjacent trades this can trigger CIS (Construction Industry Scheme) rules, but standard commercial cleaning subcontracting usually just requires normal self-employment invoicing — no CIS deduction, provided the sub is genuinely self-employed.
3. Business registration and EIN
Your subcontractor should ideally be operating as their own LLC, sole proprietorship with an EIN, or equivalent (UK: sole trader or limited company). This reinforces genuine independence and makes tax reporting cleaner on both sides.
4. Sales tax considerations
In states where cleaning services are taxable, figure out who is responsible for collecting and remitting sales tax — the sub or your company — and put it in the contract. Rules vary significantly by state, so check with your accountant or state revenue department.
Insurance: the part everyone underestimates
This is where subcontracting arrangements most often fall apart legally. If a subcontractor damages a client's property or someone gets injured on the job, whose insurance responds?
| Scenario | Who's typically liable | What protects you |
|---|---|---|
| Sub carries their own general liability policy | Sub's insurer responds first | Certificate of insurance on file, you listed as additional insured |
| Sub has no insurance | Claims may reach your business | Your own general liability policy, but expect higher premiums or exclusions |
| Sub is later reclassified as employee | Your workers' comp policy may be required to cover them | Workers' comp coverage sized for potential reclassification risk |
Best practice: require every subcontractor to carry their own general liability insurance (and workers' comp if they have employees) and provide a current certificate of insurance before they start any job. Keep these on file and set calendar reminders to collect renewals — expired coverage is a common gap that only surfaces after a claim.
For a full breakdown of policy types, coverage limits, and what US and UK cleaning businesses typically carry, see our pillar guide on cleaning business insurance.
Client contracts: don't forget the flow-down
If your own contract with the client says "you" will perform the work, using an undisclosed subcontractor can technically breach that agreement. Either get client sign-off to use subs, or write your client contracts to explicitly permit subcontracting with equivalent insurance and quality standards. This protects you if a client later complains that "someone else" showed up.
Common mistakes worth avoiding
- Paying subcontractors in cash with no invoice trail
- Never collecting a W-9 or certificate of insurance
- Treating subs like employees (fixed schedules, provided uniforms, exclusivity) while calling them 1099
- Forgetting to file 1099-NEC forms, triggering IRS penalties
- No written agreement defining scope, standards, or liability
Keeping the admin side manageable
Once you're juggling multiple subcontractors across multiple client sites, the paperwork multiplies fast — contracts, insurance certificates, invoices, payment records, and job scheduling all need to stay organized and easy to find when a client or auditor asks.
CleanWhale helps with the operational side of running a subcontractor network: online booking so clients can request service, scheduling to assign jobs to the right sub or crew, invoicing to keep payment records straight, and automatic reminders so nothing — including insurance renewals — slips through. Check out features or see plans & pricing to find a fit for your business size.