What this calculator compares
Define one item identically: one basin-only replacement or one complete named vanity unit. A double-basin vanity is not automatically two cabinets. Use whole-job totals for mixed fixtures, cabinet assembly, complex support or different plumbing layouts. Retained taps and included traps must be identified; do not buy or charge for the same part twice. Enter all provider amounts on the same confirmed VAT basis. Customer purchases use the final whole-job receipt total including retail VAT, never a per-item amount. If you buy the main product, put separately billed provider components in the relevant extra, without duplicating them. Required unpriced costs stay unknown, not free. Enter full project costs, not a balance after a deposit; booking payments and refundable security deposits are recorded separately, not added as extras or deducted as visit credits.
This tool calculates from your entered quotations; it does not estimate a market tariff or verify a provider. Blank prices, unknown tax terms and unresolved extras keep the result incomplete. You must confirm the topic-specific scope checks before a cost difference appears.
How the arithmetic works
Labour is either the entered whole-job total or a per-item amount multiplied by the shared item quantity. Separate provider parts use the same unit choice. Each visit and extra charge is a whole-job amount added once. Use agreed whole-job totals for mixed models, repair units or prices.
Provider amount = labour/package + separately charged provider parts + visit + extras − eligible visit credit. A credit cannot exceed either the charged visit fee or the entered provider work excluding that visit. It cannot offset customer-bought parts. An included or no-charge visit is not deducted again. This model does not handle a separate cash refund arrangement.
The standard UAE VAT rate is 5%. VAT is added once to VAT-exclusive provider amounts, and not added to amounts already including VAT or confirmed not charged. Enter all of one provider’s amounts on the same VAT basis.
Project cost = provider total after its VAT treatment + your separately purchased parts at their final retail total, including any retail VAT and delivery. This keeps customer-supplied parts visible without taxing them twice. Already-owned parts count at the value you explicitly enter; entering zero deliberately excludes their historic purchase cost. No deposit or prior payment is deducted, so the result is not a remaining balance.
A worked example
Illustrative arithmetic only, not a market rate: AED 500 whole-job fitting, AED 800 separately supplied vanity parts and AED 100 agreed support work total AED 1,400 before VAT, or AED 1,470 if all provider amounts exclude 5%. A trap already in the package is not charged again. The visit and all other required lines are confirmed included or not needed.
Assumptions and limits
Money is entered in AED with up to two decimal places. Each monetary field is limited to AED 1,000,000; item counts to 100; handyman lists to 12 rows; hours to 100; and technicians to 20. These are input-error safeguards, not market, capacity or safety limits. Invalid values are not silently rounded into valid inputs. Calculated monetary lines, VAT and totals are rounded to two decimal places.
Unentered damage, scope changes and future work are excluded. The known-provider subtotal uses the amounts as entered, without adding unconfirmed VAT or customer purchases; it is not an all-in quote. Even a complete cost comparison does not certify suitability, workmanship, insurance or approval.
Do not remove a basin support, lift a heavy vanity or drill tiled walls to verify compatibility. Wall strength, concealed pipes/electrics and waterproofing need competent assessment. Stop using unstable fixtures, and do not force corroded isolation valves. The calculator is not structural approval.
Read the related Dubai cost and scope guide·Plumbing services