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Service invoice template: what it is
An invoice is the request for payment you send after supplying goods or services. It records what was supplied, at what price and tax, and when payment is due. Bill for work done: date, site, labour and parts.
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Example: a filled service invoice
- The title says what the document is: an invoice.
- A unique number from a continuous series, allocated when you issue it.
- Your business name and address, and tax number if registered.
- Who it is for.
- Each line: description, quantity, rate and amount.
- Tax by rate.
- The total in the document's currency and format.
Worked example: the numbers behind the invoice above
| Item | Qty | Rate | Amount | Tax |
|---|---|---|---|---|
| On-site visit 3 October: replaced failed network switch and restored practice software access | 2.5 | $110.00 | $275.00 | $0.00 |
| Call-out charge, same-day response | 1 | $75.00 | $75.00 | $0.00 |
| 24-port managed network switch | 1 | $289.00 | $289.00 | $0.00 |
| Subtotal | $639.00 | $0.00 | ||
| Total | $639.00 | |||
No tax is charged on these lines, so the total equals the value of the supply.
How to fill in the service invoice
- Enter your business and the customer.
- Put the service date and location in the line description or the notes.
- Separate labour, call-out charges and any parts.
- Save, then sign in to issue, send and collect payment.
What makes a service invoice different
Goods come with a product code and a delivery note. Services have neither, so the invoice itself is the record of what was done. Describe the work so that someone who was not there could follow it: the task, the site, the date and how long it took.
- Service date or period, and the address where the work was done
- Labour as hours times rate, or a fixed fee per task
- Call-out, trip or minimum charges as separate lines
- Parts or materials used, each at its own price
- Warranty on the work, if you give one
Typical payment terms by service type
| Service | Common terms |
|---|---|
| Home services: plumbing, cleaning, repairs | Due on completion |
| Business services: IT, maintenance contracts | Net 15 to Net 30 |
| Recurring services: cleaning rotas, bookkeeping | Monthly, in advance or in arrears |
| Large projects | Deposit, stage payments, retainage on completion |
What to put on an invoice, field by field
| Field | What to enter |
|---|---|
| Document title | Say exactly what it is: "Invoice". The title tells the buyer and the tax authority how to treat it. |
| Number and date | A unique number in a continuous series and the issue date. LuckPanda allocates the number when you issue. |
| Your business | Name, address, and tax ID if your state or client needs it |
| Customer | Name, address, and tax ID if your state or client needs it |
| Lines | Description, quantity, unit and rate. Each line carries its own tax rate. |
| Tax | Sales tax where you must collect it, at the rate for the delivery address. |
| Totals | Taxable value, tax by component and the total, in the document currency. Amounts in words are customary in India. |
| Terms | Due date, bank or payment details and late-payment terms. |
United States rules for an invoice
- There is no federal invoice format. Include what your client's accounts payable needs to pay: your legal name, invoice number and date, what was supplied, amounts, due date and payment instructions.
- Sales tax is set by each state. Charge it only where you have nexus (a physical presence or, since 2018, economic nexus by sales volume) and the item is taxable; most services are exempt in many states.
- A business that pays a contractor $2,000 or more in a year (the threshold rose from $600 for payments made from 2026) reports it on Form 1099-NEC, so expect your client to ask for a W-9.
Mistakes to avoid
- Editing or deleting an issued invoice instead of issuing a credit note.
- Gaps or duplicates in the number series.
- Charging the wrong tax type (for India: IGST on an intra-state sale, or CGST and SGST across states).
- Leaving out the due date and payment details, which is the commonest reason invoices are paid late.
- Rounding each line's tax differently from the total; LuckPanda computes tax per line and keeps the components adding up.
Invoice vs other sales documents
| Document | When | Asks for payment | Tax document | In the books |
|---|---|---|---|---|
| Quotation / estimate | Before the order | No | No | No |
| Proforma invoice | After the order, before supply | Advance only | No | No |
| Invoice / tax invoice | On supply | Yes | Yes | Yes: sale and receivable |
| Receipt | When paid | No, confirms payment | No (receipt voucher for advances in India) | Yes: payment |
| Credit note | After an invoice, to reduce it | No, reduces what is owed | Yes | Yes: reverses part of the sale |
Questions people ask
When should a service invoice be sent?
As soon as the job is finished, or on a fixed day each month for ongoing services. Prompt invoicing is the simplest way to be paid sooner.
Is sales tax charged on services?
In the US it depends on the state and the service: repairs, cleaning and landscaping are taxable in some states and exempt in others. VAT and GST countries tax most services at the standard rate.
What is a service charge on an invoice?
Usually a fixed fee for attending, such as a call-out or trip charge. Show it on its own line so the customer can see it was not folded into the hourly rate.