For a repeat customer, copy the previous invoice instead of rebuilding the customer, payment details and familiar line items. Then treat the copy as a new document: change the dates, scope, amount and invoice number before issuing it.
Repeat work rarely repeats perfectly. A monthly service may gain an extra hour, a delivery date may move, or the customer may have changed address. Duplication saves the stable parts without pretending that the old invoice itself can be sent again.
The safe approach is “copy, compare, then issue”. Keep the previous invoice open as context, work through every time-sensitive field and preview the new PDF. That takes less time than starting from a blank form and avoids carrying an old due date or reference into the next billing period.
Open my invoicesHow to duplicate an invoice safely
Start from the most recent invoice for the same customer and service, not merely the first result with a similar amount.
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Choose Clone from the Action menu
Open My invoices and find the correct document row. In the final column, open the Action dropdown and choose Clone. The app creates the copy immediately and redirects you to the edit form for the new invoice; the original remains unchanged.
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Edit the new invoice in the opened form
After the redirect, set new issue, supply and due dates. Edit quantities, rates, descriptions, notes, payment details and customer information as required.
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Confirm a new number and PDF
Use the next unique invoice number, review totals and VAT treatment, then preview the full PDF before downloading or sending it.
Example: monthly support with one extra task
A developer invoices the same client each month for a fixed support package. July’s invoice already contains the customer’s legal details, bank transfer instructions and a £600 support line. In August, the developer duplicates it rather than entering those stable fields again.
The new invoice gets August’s issue and supply dates, the next maturity date and a new number. The support line remains, but a second line adds two hours of emergency work at the agreed hourly rate. The developer checks that July is not mentioned in the notes, confirms the new total and opens the PDF before sending it.
- Keep: verified customer, supplier and standard payment details.
- Change: invoice number, dates, service period and any variable work.
- Check: quantities, prices, VAT, total and notes in the final PDF.
Fields that deserve a fresh decision
Invoice number and dates must not be inherited without review. Descriptions should name the new delivery period, and purchase-order references may change even for the same customer. If the amount is based on hours, compare it with the current timesheet rather than assuming the copied quantity is still right.
Payment details can also change. Confirm the bank account and due date, particularly if the customer has negotiated new terms. When VAT applies, review the rate on each item instead of treating last month’s tax setting as evidence for the new supply.
- New unique number and current dates.
- Current line descriptions, quantities and rates.
- Latest customer address and purchase reference.
- Correct payment method, due date and bank details.
Choose the right source invoice
The newest invoice is not automatically the best starting point. Choose one for the same customer entity, service, currency and payment method. A similar total alone is not enough.
Compare the draft with the current order, contract or timesheet before saving it. Confirm that the same period has not already been billed and that any recurring service is still authorised.
A copy is not a correction of the original
Duplicating creates the basis for another invoice. It does not edit, cancel or legally correct the previous document. If an issued invoice was wrong, follow the correction process appropriate to your records rather than creating an unexplained copy.
The app also does not know whether the customer still authorised the work. Check the contract, purchase order or current instruction before issuing the new invoice. Never rely on saved details alone for a changed legal entity.
Related guides and tools
Frequently asked questions
No. Duplication uses the existing data as the starting point for another invoice. The source document remains in your invoice history.
A new invoice needs its own unique number. Select or review the next value from your numbering format before saving the copy.
The app creates a new invoice copy and automatically redirects you to its edit form. Review the copied customer, supplier, items and payment settings before issuing the new document.
Start blank when the project, currency, payment method or most line items have changed. You can still select the saved customer without carrying unrelated notes into the new document.
Reuse the typing, not the old assumptions
Open a previous invoice, duplicate the stable details and review the new document field by field.
Find an invoice to copy