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CITADEL Invoice Billing

What have we billed, what is owed, and who is late?

Invoice takes you from quote to cash: quotes clients accept online, invoices and credit notes, recurring billing and payment reminders. Clients open each invoice from a private link and pay by card through your own payment account, or by bank transfer.

INVOICE Invoicing Made Simple
MO

Dashboard

Total Revenue $543,633.48
Outstanding $298,392.86
Overdue $94,001.55 5 invoices
Paid This Month $46,572.33 4 payments

Recent Invoices

View all
  • INV-01035Sent Dunravel Health$66,444.00
  • INV-01034Viewed Oskerby Logistics$7,910.00
  • INV-01032Sent Kilvarra Credit Union$50,946.06
  • INV-01033Draft Strathlen Energy$42,131.26
  • INV-01031Sent Pemberlow Retail Group$26,460.00
Invoice Client Amount Status
INV-01035 Dunravel Health $66,444.00 Sent
INV-01034 Oskerby Logistics $7,910.00 Viewed
INV-01032 Kilvarra Credit Union $50,946.06 Sent
INV-01033 Strathlen Energy $42,131.26 Draft
INV-01031 Pemberlow Retail Group $26,460.00 Sent
Sample data.

What Invoice covers

Quotes to invoices

One record from the first quote to the last payment.

  • Quotes with numbered revisions, accepted or declined online by the client
  • Accepted quotes kept as a PDF with an acceptance certificate
  • Convert an accepted quote to an invoice, or to monthly billing
  • Invoices and credit notes
  • Reusable terms and your own numbering format

Bill the work you did

With Time connected, invoices are built from the hours your team logged.

  • Pick a client and a date range, and pull in its unbilled hours
  • Group lines by project, task, person or entry
  • Billed hours are locked in Time so they cannot be billed twice
  • Follows your rule on approval or client sign-off before billing

Get paid

Every invoice link shows the balance and a way to pay it.

  • Card payment through your own payment account, or bank-transfer details
  • Card payments and refunds update the invoice on their own
  • Manual and partial payments by cash, cheque, transfer or card
  • Reminders before, on and after the due date, plus Send Reminder on demand
  • Overdue invoices flagged automatically

Recurring billing and reporting

Retainers and subscriptions bill themselves; the numbers are one click away.

  • Recurring invoices from weekly to annual, with pause, resume and optional auto-send
  • A product catalog with one-time and subscription pricing, prorated for partial periods
  • Taxes per product and per line, including compound taxes and tax-exempt clients
  • Revenue, aging, client and tax summary reports, with CSV export
  • Each client billed in its own currency; totals never mix currencies

In practice

Less chasing

Reminders go out on the schedule you set, and the wording adapts to whether an invoice is due soon, due today or overdue.

Quotes that close

Clients accept a quote from a link, and the accepted copy is kept with who accepted it and when.

Billing from delivery

Pull approved hours from Time into a draft invoice when you are ready to bill. Hours are marked billed in Time, and released again if the invoice is cancelled.

Contract milestones, billed on time

With Contracts connected, each milestone on a signed contract's billing schedule becomes a draft invoice when it is due, never sent on its own and never billed twice.

Every contract at a glance

With Contracts connected, see every contract's billed, remaining and hours at a glance: each signed contract has its own page with what has been invoiced to date, what remains, its milestones and, with Time connected, the hours used against its budget.

Subcontracted work

Bill a client directly, or bill the prime contractor for work done for its end client, with statements for each.

Clients and contracts in step

With Contracts connected, clients arrive on their own and signed contracts show on the client's page. A Scope estimate arrives as a draft quote, ready to review.

Emails with the PDF

Attach the PDF to invoice, quote, credit note and reminder emails by default, with an override for each client.

At a glance

Invoice works on its own, and connects to the other CITADEL apps you use.

Get paid
Card through your own payment account, or bank transfer
Billing cadence
Weekly, every two weeks, monthly, quarterly, twice a year or annually
Reminders
Before, on and after the due date
Documents
Quotes, invoices and credit notes as PDFs with your logo
Currencies
One per client, never mixed in totals
Bill from Time
Approved hours pulled in on demand, never billed twice
Bill from Contracts
Signed contracts' milestones drafted as invoices when due, for you to send
Contract pages
Invoiced to date, remaining, milestones and hours from Time for each contract

See Invoice with your own way of working.

Tell us how your team works today. We'll walk through Invoice using sample data shaped like your business, and show how it connects to the other apps if you use them.

Book a walkthrough