Shared tools
The master expense record for the SEO suite with the vendor invoice attached once.
Agency finance · Cost allocation
Recording shared-cost allocations across your clients
Your agency runs one SEO suite, one stock subscription, and one ad-management seat across a dozen clients — but each client should carry its share. Without a record of how you split shared costs, the same $99 tool gets allocated differently every month or forgotten entirely. Cash Workspace lets you attach the master invoice once and record the per-client allocation so the split is consistent and reviewable.
The problem
Why shared-cost splits drift
Shared tools serve many clients but arrive as one invoice. With no recorded allocation method, the split is reconstructed from memory each time and never matches month to month.
- A $99/mo SEO suite is split four ways one month and three the next, with no record of why.
- The stock-image subscription gets billed entirely to one client because nobody logged the shares.
- At year-end you can't show how a shared cost was distributed across client folders.
- Two team members allocate the same tool differently because there's no agreed rule.
- The master invoice lives in one place but the per-client shares live nowhere.
The workflow
Record a shared cost and its split
File the master invoice once, decide the allocation rule, and record each client's share so the split is repeatable.
- 1
Record the shared cost
Log the expense — vendor, category, date, and full amount — for the shared tool, e.g. the $99 SEO suite.
- 2
Attach the master invoice
Attach the single vendor invoice to that expense record so the source document lives in one place.
- 3
Choose an allocation method
Decide how to split it — evenly across active clients, by hours, or by a fixed percentage — and write the rule down.
- 4
Record each client's share
Note the dollar amount or percentage assigned to each client and reference the master invoice from each client folder.
- 5
Review the split monthly
Once a month, confirm the active-client list and the shares still match how the tool was used.
Record structure
What to record for each shared cost
These fields keep a shared cost and its per-client allocation linked and auditable.
- Shared cost name
- The tool or subscription being split, e.g. SEO suite, stock subscription, ad-manager seat.
- Vendor
- Who issued the master invoice.
- Full amount
- The total monthly or annual charge before splitting.
- Date / period
- The billing period the cost covers.
- Allocation method
- The rule used — even split, by hours, or fixed percentages — recorded so it stays consistent.
- Per-client share
- The dollar amount or percentage assigned to each client.
- Master invoice
- The single vendor invoice attached once and referenced from each client folder.
- Category
- A product-defined expense category so shared costs group cleanly at review time.
Example setup
An example allocation setup
One way to organize a shared $99 SEO suite across four clients.
Allocation rules
A note describing the split — e.g. even quarters across the four active clients this month.
Client A folder
A reference to the SEO suite record noting Client A's $24.75 share.
Client B folder
A reference to the same master invoice noting Client B's $24.75 share.
Common mistakes
Allocation mistakes to avoid
- Splitting the same shared tool differently each month with no recorded rule.
- Attaching the master invoice to one client and forgetting the others entirely.
- Allocating to clients who weren't active that period.
- Keeping shares only in your head, so a teammate can't reproduce the split.
- Mixing genuinely client-specific costs into the shared bucket.
How it helps
How Cash Workspace helps
Attach the invoice once
Record the shared cost and attach the master invoice a single time, then reference it from each client folder.
Record the split manually
Note each client's share yourself using your chosen rule — Cash Workspace keeps the record; it does not compute the split.
Group by category
Tag shared costs with product-defined categories so they're easy to review at month-end and year-end.
Related
Related agency cost workflows
Software stack records
Organize every recurring tool the agency pays for.
Marketing agency client costs
Keep per-client costs organized across campaigns.
Overhead vs billable
Separate shared overhead from billable client costs.
Pass-through cost records
Record costs passed straight through to a client.
Expense categories
See the product-defined categories for grouping costs.
All finance workflows
Browse the full Cash Workspace workflow library.
FAQ
Shared-cost allocation FAQ
- How do I split one invoice across several clients?
- Record the shared cost once with the master invoice attached, decide an allocation rule such as an even split or by hours, then note each client's share and reference the master record from their folders.
- Does Cash Workspace calculate the per-client split for me?
- No. You decide the allocation and enter each client's share. Cash Workspace records the shared cost, the rule, and the shares; it does not compute or calculate the split.
- Where should the master invoice live?
- Attach it once to the shared-cost record, then reference that record from each client folder so you never store duplicate copies you'd have to keep in sync.
Organizing help — not tax, accounting, or legal guidance
Cash Workspace is a free workspace for organizing invoices, expenses, receipts, clients, and documents. This page is organizing guidance only — not tax, accounting, legal, or bookkeeping guidance. Cash Workspace does not connect to your bank, does not scan or read your receipts for you, and does not move or collect payments. Whether an expense is deductible depends on your situation, so confirm it with a qualified accountant or tax professional.
Keep every shared-cost split on record
Start a free workspace, attach each master invoice once, and record how every shared tool splits across your clients so the allocation stays consistent month to month.