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Glossary · Money & accounting

What is Deferred revenue?

Deferred revenue for HVAC, plumbing and electrical shops: why a prepaid maintenance plan isn't all revenue on day one, a worked example and ASC 606 basics.

Updated October 15, 2026 · 6 min read

Definition

Deferred revenue is money a customer has paid you for work you haven't delivered yet, such as a prepaid annual maintenance plan or a deposit on an install. It is recorded as a liability, because you still owe the work, and becomes revenue as the visits or the job are completed. It keeps prepaid months from looking falsely profitable.

Also called: unearned revenue, contract liability, customer deposits, prepaid revenue

Formula

Deferred revenue = cash received for the plan − revenue earned from visits delivered

Example: $240 plan for 2 visits, spring visit done → $120 earned, $120 still deferred

Is
A liability: work owed for cash received
Common trade examples
Prepaid maintenance plans, install deposits
Becomes revenue
As the promised visits or work are delivered
Book rule
ASC 606 for accrual-basis financial statements
Tax rule
Advance payments: IRC 451(c), up to one year deferral

Selling forty annual maintenance plans in March feels like a great month. On a cash view of the books, it is. But those customers paid for visits that haven't happened yet, and somebody will have to drive out, pay a technician and replace filters to deliver them. Deferred revenue is how the books keep track of that promise, so March doesn't look like a windfall and October doesn't look like a disaster.

Deferred revenue in plain English

When a customer pays before the work, you have their money and they have your IOU. Accounting records both: the cash goes up, and a liability called deferred revenue goes up by the same amount. Each time you deliver part of what they paid for, a slice of that liability turns into revenue.

Common examples in the trades:

  • Prepaid maintenance plans. A $240 annual plan paid in full covers visits spread over the year.
  • Install deposits. A deposit taken to order equipment is owed back in work until the install is done.
  • Prepaid service blocks. A property manager buys 20 hours of service in advance.
  • Gift certificates or prepaid tune-up packs. Paid now, redeemed later.

Monthly membership dues charged each month usually don't create much deferred revenue, because each month's fee roughly matches that month's service. The issue is biggest with annual and multi-year plans paid up front.

A worked example: a prepaid maintenance plan

Made-up numbers: a customer pays $240 on January 15 for a one-year plan that includes a spring cooling tune-up and a fall heating tune-up. Here's one common way an accountant might recognize it, earning half at each visit.

DateEventCashDeferred revenue (liability)Revenue recognized
Jan 15Plan sold and paid+$240$240$0
Apr 10Spring tune-up doneNo change$120$120
Oct 22Fall tune-up doneNo change$0$120
Year total$240$0$240

Booked entirely in January, the plan makes January look $240 better and April and October look $120 worse than reality. Multiply by 400 members and the distortion in your monthly profit and loss can hide whether service work is actually profitable.

What do the rules say?

Financial statements: ASC 606

For accrual-basis financial statements in the U.S., revenue recognition follows FASB Accounting Standards Codification Topic 606, Revenue from Contracts with Customers. The IFRS Foundation notes that its matching standard, IFRS 15, was issued in May 2014 together with the introduction of Topic 606 into the FASB codification.1 The core idea is that a business recognizes revenue to depict the transfer of promised goods or services to the customer, and the standard applies it in five steps:1

  1. 1

    Identify the contract

    The signed maintenance agreement or accepted estimate.

  2. 2

    Identify the performance obligations

    What you promised: for example two tune-ups, priority scheduling and a repair discount.

  3. 3

    Determine the transaction price

    What the customer pays: the $240 plan fee.

  4. 4

    Allocate the price to the obligations

    Split the $240 across what you promised, based on what each part is worth.

  5. 5

    Recognize revenue as each obligation is satisfied

    Revenue moves out of deferred revenue as the visits and other promises are delivered.

Accountants following the standard usually call deferred revenue a contract liability.

Taxes: advance payments

Tax timing follows its own rules. IRS Publication 538 says an advance payment is generally reported as income in the year you receive it. If you use an accrual method, you can elect to postpone including the advance payment until the next year, but you "cannot postpone including any payment beyond that tax year."2 Cash-method businesses include income when it is actually or constructively received.2

Final regulations under Internal Revenue Code section 451(c), published in the Federal Register on January 6, 2021 as T.D. 9941, set out the deferral method: include the part recognized in your financial statements in the year of receipt, and the remaining portion in the following taxable year.3

 Accrual-basis financial statementsFederal income tax
RuleASC 606IRC 451(c), Treas. Reg. 1.451-8, IRS Pub. 538
When a prepaid plan becomes revenueAs promised services are delivered over the termYear received, or up to one year later for accrual-method taxpayers who elect deferral
Multi-year plansSpread over the full termNo deferral beyond the next tax year
Who cares mostLenders, bonding companies, buyersYou and your tax preparer

So a three-year plan paid up front can be spread over 36 months in the financial statements while most of it is taxable within two years. That gap is normal. Your accountant tracks both.

Why deferred revenue matters for running the business

  • Honest monthly margins. Service profitability should reflect the visits you actually ran.
  • Cash you've already spent. If plan cash funded March payroll, you still owe the fall visits. Know how many visits are owed and what they'll cost to deliver.
  • Selling the business. Buyers look at deferred revenue as work they'll have to deliver without new cash.
  • Refund exposure. If your agreement allows refunds on cancellation, the deferred balance is money that could leave.

Month-end checklist for prepaid plans

  • Count plan visits owed, by month due
  • Estimate the labor and material cost to deliver them
  • Confirm your refund policy is in the written agreement
  • Send your accountant plans sold, visits completed and cancellations for the month
  • Check the deferred revenue balance moves down as visits are completed

Deferred revenue and memberships in TradesWork

Memberships in TradesWork can be priced monthly, yearly or paid once, with up to 12 included visits per term, each due in named months or every few months. The Due for an appointment list shows open visits, flags overdue ones and books a selection at once, and technicians see a member badge and visits remaining on each appointment. That gives you the operational side of deferred revenue: which paid visits are still owed.

Membership KPIs and the visits due for booking: the paid-for work you still owe members. · Real product screenshot, demo company data.
Membership KPIs and visits due

TradesWork doesn't post deferral or recognition journal entries. Membership fees post to QuickBooks Online on their invoice through the QuickBooks sync, and your accountant decides how to defer and recognize them there. For building the plan itself, the HVAC maintenance plans guide and the membership revenue calculator are good next steps.

Free calculatorMembership program revenue calculatorSee what a maintenance membership program is worth over three years.

Footnotes

  1. IFRS Foundation, IFRS 15 Revenue from Contracts with Customers, standard summary. Notes issuance in May 2014 together with Topic 606 in the FASB Accounting Standards Codification, and lists the five-step model. https://www.ifrs.org/issued-standards/list-of-standards/ifrs-15-revenue-from-contracts-with-customers/ ↩ ↩2

  2. Internal Revenue Service, Publication 538, Accounting Periods and Methods, sections on the cash method, accrual method and advance payments. https://www.irs.gov/publications/p538 ↩ ↩2

  3. Department of the Treasury, Internal Revenue Service, T.D. 9941, "Taxable Year of Income Inclusion Under an Accrual Method of Accounting," Federal Register Vol. 86, No. 3, January 6, 2021. https://www.govinfo.gov/content/pkg/FR-2021-01-06/html/2020-28653.htm ↩

Free download

Maintenance Agreement Template

A plain-English membership agreement you can edit, plus a one-page plan sheet for your techs to hand over.

Get it free
  • Editable agreement in Word
  • Three plan tiers with visit schedule
  • Renewal, payment and cancellation terms in plain English
  • Customer-facing one-page plan sheet
  • Notes on what to check with your attorney

Frequently asked questions

A liability. The cash you received is an asset, but you also owe the customer the work they paid for. Deferred revenue records that obligation. As you deliver the visits, the liability shrinks and revenue goes up by the same amount. If the customer cancels and you refund, the liability goes away with the refund instead.

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Three workers in coveralls unloading equipment from a van