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THE DESIGN INDEX

© 2026 The Design Index

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THE DESIGN INDEX
DiscoverWorkspaceOpportunitiesThe ExchangeThe IndexResources
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THE DESIGN INDEXWORKSPACE
Workspace
ONE CONNECTED WORKFLOWFrom brief to completion.

Explore the parts of Workspace through the way an interior project actually moves.

Explore all features
01
Project

Set the work up properly.

Project Setup & TemplatesBrief & IntakeTimeline & tasksShared calendarsTeam & timeAI Design Assistant
02
Design

Develop and approve every idea.

Room boardsMood boards3D ModelsClient reviewInteractive floor plans
03
Finance

Keep the commercial picture live.

Live budgetInvoices & paymentsTime & profitability
04
Procurement

Move selections into delivery.

Specifications & FF&ECustom joineryTrade requestsOrders & installation
05
Completion

Close with a useful record.

Document studio
SolutionsResourcesPricing
Sign inStart Workspace

Interior design invoicing software

Turn approved work
into an invoice.

Interior design invoicing software helps you bring project items, fees and billable work together, create the invoice and give clients a clear way to pay.

Start free Explore the workspaceWatch the workflow
ApprovedInvoicedPaid
DISaint Germain ApartmentInvoices
Billing connected
Project billing, overview to invoice preview
READY TO BILL4 items selected€6,751 ready for the next invoice.
LIVE PROJECT STATUSPaid and recordedThe invoice remains linked to its source work.

READY TO BILL

Select the project work you want to bill.

Approved project work stays connected to its source, so you can choose what belongs on the next invoice instead of recreating every line manually.

APPROVED PROJECT WORK

Ready to bill

Every amount stays linked to its live project source.

Project workCategoryReady
0 selected€0
4 selected€6,751Ready for invoice

PROJECT WORK TO INVOICE

The line items already belong to the project.

Select approved products, fees and time. The same source records become invoice lines with a clear total.

SELECTED PROJECT WORK4 items
ApprovedLive project records€6,751
Dining chairFF&E, Dining Room€2,952
CredenzaFF&E, Primary Bedroom€1,449
Floor lampFF&E, Living Room€350
Interior design feeDesign fees, Project€2,000
Linked source dataNothing retyped
INVOICEDraft
CREATED FROM PROJECT4 linked lines

Saint Germain, Project invoice

INV-2026-002, 4 line items

Dining chair€2,952
Credenza€1,449
Floor lamp€350
Interior design fee€2,000
Total€6,751

BUILD

Review every detail before it goes to the client.

Set the billing details, choose the project lines and make final adjustments before anything is sent.

Client, issue date and billing period Linked project lines and groups Terms, tax and payment options
010203
INVOICE BUILDER

Invoice details

01Details02Lines03Terms
DescriptionGroupQtyAmount
Dining chairDining Room2€2,952
CredenzaPrimary Bedroom1€1,449
Floor lampLiving Room1€350
Interior design feeProject1€2,000
Client and dates complete 4 invoice lines
Total€6,751
TERMS AND ADJUSTMENTS

Final details stay editable until issue.

Review the payment terms, tax, client note and payment options before the invoice leaves the project.

Details2Terms3Issue
FINAL SETTINGSDraft
Stripe Bank transfer Reminders

CLIENT INVOICE

Working data becomes a professional document.

Preview the finished invoice with the project lines, totals and client facing information already in place.

Project lines remain grouped The client sees only issued information A PDF remains available to download
INVOICE BUILDERSaint Germain, Project invoice
EditPreview
01Details02Lines03Terms
DescriptionGroupAmount
Dining chairDining Room€2,952
CredenzaPrimary Bedroom€1,449
Interior design feeProject€2,000
Ready to preview€6,751
STUDIO AIRA

Interior Design Invoice

Saint Germain Apartment

INVOICEINV-2026-002Issued 23 Sep 2026
BILL TOVictoria Lang

Saint Germain Apartment

Due
30 Sep 2026
Currency
EUR
DescriptionTotal
Dining chair€2,952
Credenza€1,449
Floor lamp€350
Interior design fee€2,000

Payment due within 7 days. Pay securely online or use the bank details provided.

Subtotal
€6,751
Tax
€1,822.77
Total
€8,573.77
Hover either layerBuilderClient invoice
CLIENT READYWorking data becomes a clear document.

PAYMENTS

Give the client a clear way to pay.

Accept online payment through Stripe or provide bank transfer details directly with the invoice. Supported card methods can include Apple Pay where available.

PAY INVOICEDue 30 Sep
€8,573.77

How would you like to pay?

Secure online payment through Stripe
INVOICE ISSUEDINV-2026-002

€8,573.77 due

Sent
CLIENT PAYMENTStripe checkout

Card or supported wallet

Processing
PROJECT UPDATEDPayment recorded

Paid 23 Sep 2026

Paid

BILLING STATUS

See what has been paid and what is still ready to bill.

Keep invoiced work, payments and approved work waiting to be billed visible from the project.

PROJECT BILLING

Saint Germain Apartment

Invoices, payment status and approved work ready to bill.

Live project totals
PAID TO DATE€8,191.501 invoice
OUTSTANDING€8,191.50Sent, not yet paid
DRAFT VALUE€0.00No reserved work
READY TO BILL€22,122.00Approved project work
BILLING HEALTHOn track

Project billing is on track

Unbilled approved work
€22,122.00
Reserved on drafts
€0.00
Sent, not yet paid
€8,191.50
RECENT INVOICES
Paid

Interior design invoiceINV-2026-001, 23 Sep 2026

€8,191.50
Sent

Furniture invoiceINV-2026-002, due 30 Sep

€8,191.50

INVOICES

Keep billing connected to the project.

Select the work, review the invoice, issue it to the client and keep the payment status where the project team can see it.

Start free Explore the workspace
READY TO BILL4 approved items

€6,751

INVOICEINV-2026-002

Sent to Victoria

PAYMENTPaid

Project updated

Continue exploring Workspace

  • contact invoicing for interior designers
  • Time tracking for interior designers
  • project expenses for interior designers