Every Vendor Bill, in the Right Project
Carpentry, electrical, glass, lighting, plumbing — each project has its own vendors and its own bills. Keep quotes, vendor bills and client invoices isolated by project, end to end.
Your engagement with a client is back-to-back with your vendors: the client pays you for a cabinet, you pay the carpenter for building it. With five or ten projects running at once, that becomes dozens of vendors and hundreds of bills a month. When bills arrive as a single stack, matching each one to the right project becomes a month-end guessing game — and the guesses are what your project margins are built on.
Sound Familiar?
- Vendor bills arrive by email, WhatsApp and paper, and nobody is sure which project each belongs to.
- The same carpenter works on three projects and sends one bill for all of them.
- You only realise a project overspent on materials after it is handed over.
- The accountant can tell you total expenses for the month, but not for a single project.
End to End: Quotes → Vendor Bills → Invoices
When every document carries the project, clarity follows — and so does focus.
Quotes
The build quotation is put together section by section, with pricing sourced from each vendor — the budget for the project is set here.
Vendor Bills (Payment Out)
Each vendor bill is recorded against the project — and split across projects when one bill covers several jobs.
Client Invoices (Payment In)
Progress invoices are issued from completed tasks on the same project, so income and costs sit side by side.
How progress billing works →What Changes
- ✓ Each project shows its vendor bills, paid and unpaid, at any time — not just at month-end.
- ✓ Quoted vendor cost versus actual vendor bills is visible while the project is still running.
- ✓ Variation-order costs are matched to the variation, not lost in the general pile — see variation order tracking.
- ✓ Vendor payments can be planned against expected client collections.
With costs and income on the same project, the next step is knowing whether the project made money — see project profit and loss.
Project Expenses — FAQ
How do I track expenses by project for an interior design firm?
Record every vendor bill against the project it belongs to at the moment it is entered — not at month-end. When quotations, vendor bills and client invoices all carry the same project, expenses by project are a report, not a reconciliation exercise.
What if one vendor bill covers several projects?
The bill can be split across projects line by line, so a carpenter who works on three jobs in a month is still charged to the right ones.
Can small site purchases be tracked too?
Yes. Petty-cash and on-site purchases can be recorded against the project as well, so the cost picture includes the small items that add up.
One System, Every Other Headache Too
Interior design firms rarely have just one problem. The same project system that fixes this one also handles the rest of the job — from the first design-fee quote to the final progress claim.
See the full project management system for interior designers
See every project's costs clearly
Tell us how many vendors you work with and how bills reach the office today. We'll show you how to keep them isolated by project.