GUIDE 03 / MATERIALS & EXPENSES
Catch the costs between the lines.
A project can have sensible labor estimates and still lose money through overlooked purchases. Itemizing non-labor costs makes the budget easier to review, explain, and update.
Use materials for purchased project inputs and additional expenses for other delivery costs. For a fixed fee, enter a quantity of one and the total amount as the unit cost.
Start with a consistent classification
Materials are items directly consumed or incorporated into the deliverable, such as print stock, packaging, or components. Additional expenses can include shipping, travel, equipment rental, project-specific software access, or a fixed subcontractor fee. The distinction helps you inspect the estimate; both categories contribute to total project cost.
Some costs reasonably fit either category. Consistency matters more than a perfect label. Decide how your team classifies them and use the same approach across estimates. PlanForge is a planning aid, not a bookkeeping system, so its categories do not determine the correct accounting or tax treatment.
Check the unit before the price
Supplier pricing can be expressed per item, pack, sheet, hour, day, or batch. A plausible unit price applied to the wrong quantity can create a large error. Put the unit in the item name, such as “presentation boards, pack of five,” so another person can reconstruct the calculation.
Account for minimum order quantities and expected waste. If a deliverable needs eight units but the supplier sells packs of ten, budget for the quantity you must buy. Do not assume spare stock has no cost simply because it may be useful on another project. Allocate shared purchases using a documented method.
| Line item | Quantity | Unit cost | Total |
|---|---|---|---|
| Production materials, per pack | 3 | £25 | £75 |
| Delivery, flat charge | 1 | £12 | £12 |
| Equipment rental, per day | 2 | £40 | £80 |
Estimate the landed cost
The displayed purchase price may not be the full cost of getting an item ready to use. Delivery, handling, import charges, setup, and required accessories can change the total. Ask what is included before comparing suppliers. A lower headline price is not automatically the lower project cost.
Use a consistent tax basis. Where tax is recoverable, businesses commonly compare costs excluding that recoverable amount; where it is not recoverable, it may form part of the cost. Your circumstances and jurisdiction determine the treatment. PlanForge does not calculate tax, currency conversion, customs charges, or depreciation.
Separate one-off and recurring spending
A monthly subscription purchased specifically for a project should reflect the number of months you reasonably expect to need it. Remember setup time, renewal dates, and cancellation conditions. An existing company-wide subscription may instead belong in overhead rather than being charged in full to every project.
Buying equipment and renting equipment have different implications. Renting can make a short project’s cost easier to identify, while buying may benefit future work but require more cash upfront. Do not treat the entire purchase as the project’s economic cost without considering your allocation policy and professional accounting advice.
Add contingency with a reason
A contingency allowance should relate to identified uncertainty: an unstable quantity, an unconfirmed delivery method, or a purchase whose specification is not final. Add it as a clearly named additional expense. Keep the calculation or rationale in your supporting records because the tool stores the amount, not a risk model.
A blanket allowance is simple but can disguise unresolved questions. A line-by-line allowance takes longer, yet makes the largest risks easier to discuss. Neither approach guarantees the final cost. Revisit the allowance when quotes arrive instead of leaving it untouched after uncertainty has been resolved.
Keep evidence outside the calculator
Save supplier quotes, their validity dates, quantities, and delivery assumptions in your normal project files. PlanForge does not attach documents or track purchase orders. Update item values as information improves; remove and re-add a cost line when its quantity or unit price changes.
Before approving the budget, inspect each category in the interactive breakdown. Look for missing delivery charges, duplicated subcontractor costs, and overhead already included in labor rates. Export a dated summary alongside the supporting quotes. That gives a reviewer a clear numerical snapshot without pretending the estimate is a supplier commitment.