Everhour turns tracked billable time and expenses into invoices, while United States invoice rules still depend on contracts and sales-tax details.
Fill in your details, add line items, hit Print when ready.
| Description | Qty | Rate | Tax | Amount |
|---|
The calculator gives you the number — Everhour takes it from there.
One click and you're timing. Start a timer, add an entry, edit the details. This is exactly how it feels in Everhour.
Set a budget, assign rates, and get alerted before you're over.
Measurement
Track your budget through time or costs
Every report you need — configured your way, always up to date.
Tracked hours flow straight into a polished invoice — no copy-paste, no manual math.
An invoice app is for turning completed work, shipped goods, or approved project costs into a document a client can review and pay. The finished invoice should identify the seller and buyer, show a unique invoice number, list the issue date and due date, describe each line item, state payment terms, and tell the buyer where to send payment.
For ordinary United States businesses, no single federal private-sector invoice form controls every invoice. The IRS treats invoices as supporting documents for business transactions and gross receipts, so the practical standard is clarity, consistency, and enough detail to match the invoice to your books, contract, and payment record.
A complete invoice starts with seller and buyer details, then adds a sequential invoice number, dates, line items, subtotal, tax line when applicable, total, payment terms, and remit-to information. Line items should show the charge basis clearly, such as project phase, service description, quantity, rate, and extended amount.
An invoice is different from a receipt, estimate, and quote. An invoice asks for payment after a sale or billable work. A receipt proves payment received. An estimate gives a pre-work price expectation, and a quote gives a firmer pre-work offer. Mixing those documents creates collection problems because the buyer may not know whether payment is due.
The United States does not use a national VAT or GST invoice regime, so an invoice in the United States does not need a VAT or GST registration number. Sales and use tax comes from state and local rules. The right tax line depends on nexus, product or service taxability, customer location, and the applicable state and local rate.
Service taxability needs special attention. California generally taxes retail sales of tangible personal property and only some service or labor charges, while Texas identifies 16 broad categories of taxable services. Remote sellers also need nexus checks. South Dakota's law reviewed in South Dakota v. Wayfair applied after more than $100,000 in sales or 200 separate transactions annually into the state.
A free invoice app is enough when you need one clean PDF, already know the client details, and can enter line items manually from your own records. It also works for a small job with simple payment terms and no recurring billing workflow.
A managed workflow matters when tracked billable time, project costs, expenses, rates, approvals, and invoice status need to stay connected. Everhour Billing & Invoicing can generate invoices from uninvoiced time and expenses, exclude non-billable tasks, apply client defaults for taxes, discounts, and terms, and export invoices to QuickBooks Online, Xero, or FreshBooks.
This content is for general information only, may not be fully up to date, and is provided without any warranty or liability.
High Performer
G2
Summer 2026
Best Ease Of Use
Capterra
Summer 2026
Rated in the top time trackers across G2, Capterra, and TrustRadius — with consistent praise for ease of use, integrations, and support.
An invoice app should collect seller and buyer details, invoice number, issue date, due date, line items, subtotal, tax line when applicable, total, payment terms, and remit-to details. It should also capture the work basis, such as hours, quantity, project, task, or expense, so the buyer can connect the charge to the delivered work.
An invoice in the United States does not need a national VAT or GST field because the United States does not use a national VAT or GST invoice regime. A seller that makes taxable sales may need state-level sales-tax registration, such as a California seller's permit, but that is different from a VAT or GST registration number.
An invoice app should add sales tax only when the sale is taxable and the seller has the relevant collection obligation. The rate is not national. Washington, for example, has a 6.5% state portion plus a local portion that varies by city or county, based on where the customer receives the goods or services.
One invoice app can format both, but the tax and description fields need separate treatment. Product invoices often use quantity, unit price, and shipping details. Service invoices need a clear description of work performed, billing period, hours or fixed fee, and tax handling based on the state's service-tax rules.
The common mistake is sending a document that lacks a clear invoice number, due date, payment terms, or line-item detail. Buyers use those fields to route approvals, match purchase records, and schedule payment. Missing tax treatment also causes rework when the buyer needs a corrected invoice for accounting.
Everhour Billing & Invoicing converts uninvoiced billable time and expenses into client invoices, calculates amounts from project or member rates, and excludes non-billable work. Client records can supply defaults such as contact details, taxes, discounts, and payment terms before export to QuickBooks Online, Xero, or FreshBooks.
Everhour shows exported invoice status, invoice number, issue date, and amount after invoices move to QuickBooks Online, Xero, or FreshBooks. That status sync keeps billing reports tied to the same tracked time and project records, instead of leaving invoice progress only inside the accounting tool.
Convert approved time and expenses into invoices, keep non-billable work out of client totals, and export billing records through Everhour Billing & Invoicing.
14-day free trial · No credit card · Cancel anytime
