Phone & data
Each monthly bill at full amount, with a business-portion note and the reason for it.
Freelance finance · Shared-use costs
Document the business portion of shared-use costs
Your phone, your car, your home internet — you use them for work and for life, and at year-end your accountant will want to know roughly what share was business. Cash Workspace doesn't calculate that split for you; instead it gives you a clean place to record the full cost, write down the business portion you're claiming, and add the reason, then flag it so your accountant can confirm. This is documentation, not a deduction calculation or advice.
The problem
Why shared-use costs are hard to record
A single bill covers both work and personal use, so there's no clean receipt for the business part. You have to document your own reasoning.
- Your phone bill is one number, but maybe 60% of calls and data are for clients.
- Your car is used for client visits and the school run, with no split on the receipt.
- Home internet powers your work and your evenings, on one monthly charge.
- At year-end you can't remember what business share you settled on for each item.
- Your accountant asks how you arrived at a percentage and you have no note explaining it.
The workflow
Record a shared-use cost
Capture the full cost and your reasoning so the business portion is documented and reviewable.
- 1
Record the full amount
Enter the complete bill — the whole phone, car, or internet charge — not a pre-split figure.
- 2
Note the business portion
Write down the business share you're claiming as a manual note, e.g. "~60% business".
- 3
Add the reason
Explain briefly how you reached that share, e.g. "work calls are most of my usage".
- 4
Attach the bill
Attach the full statement or invoice so the recorded amount has its source document.
- 5
Flag for the accountant
Mark the record as shared-use to confirm, so your accountant reviews the portion at handoff.
Record structure
What to record for each shared-use cost
These fields document your reasoning without the product computing any split.
- Item
- What the cost is — phone, vehicle, home internet, home office utilities.
- Full amount
- The complete bill total and currency, before any portion is considered.
- Business-portion note
- A manual note of the business share you're claiming, written as a percentage or words.
- Reason
- A short explanation of how you arrived at that portion.
- Period
- The month or period the bill covers, so usage lines up with the dates.
- Bill attachment
- The full statement or invoice attached as proof of the total.
- Accountant flag
- A flag marking the record as shared-use for your accountant to confirm.
Example setup
An example shared-use record
How three common mixed-use costs look documented in your workspace.
Vehicle & travel
Fuel, insurance, and service bills with a noted business share and a flag to confirm.
Home internet & utilities
Monthly charges recorded in full with a business-portion note and the supporting statement attached.
Common mistakes
Mistakes to avoid
- Recording only your guessed business slice and losing the full bill amount.
- Claiming a percentage with no note explaining how you reached it.
- Treating your noted portion as a confirmed deduction rather than a draft for the accountant.
- Forgetting to attach the full statement, so the total has no source.
- Using a different made-up percentage every month with no consistent reasoning.
How it helps
How Cash Workspace helps
Full amount plus a note
Record the whole bill and add a manual business-portion note and reason — you do the judgement, the workspace keeps the record.
Attach the source bill
Keep the full statement attached so your noted portion always has its supporting document.
Flag for confirmation
Mark shared-use records so your accountant can review every portion at handoff.
Related
Related freelance finance workflows
Personal vs business
Keep clearly-personal charges out of business records first.
Home office expense records
Document home-office costs the same careful way.
Mileage and transport records
Log business trips alongside vehicle costs.
Accountant handoff folder
Hand over flagged shared-use records for review.
All finance workflows
Browse the full Cash Workspace workflow library.
FAQ
Shared-use expense FAQ
- Does Cash Workspace split my phone bill into business and personal?
- No. You record the full amount and write the business portion as a manual note. Cash Workspace stores the figure and your reason; it does not calculate or split anything for you.
- What business percentage should I use?
- That's a judgement your accountant should confirm. Record the share you believe is right with a clear reason, flag it, and let a qualified professional verify it at handoff.
- Why record the full amount and not just the business part?
- Keeping the full bill plus your noted portion gives your accountant the complete picture and a document to check against, instead of a pre-split number with no source.
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.
Document shared costs the right way
Start a free workspace and record each mixed-use cost at full amount with a business-portion note and reason, flagged for your accountant to confirm.