Billable hours calculator in Vietnam

Everhour supports project budgeting and billing workflows, while Vietnam service invoices require clear VND and VAT totals.

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Working hours in the period

Admin, meetings, internal work

$
80%

Industry average is 75–80%

Monthly revenue
Billable hours136h
Utilization rate85%
Revenue gap to target$0

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Acme Web Project
1
50% of budget used
$2,500.00of $5,000.00
$2,500.00 remaining
75%
Actual costRemaining cost

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Everhour — Invoices
Your Company LLChello@yourcompany.com
INVOICE
Invoice #1042
Group by:
DescriptionHoursRateAmount
Website Redesign14h$150/h$2,100.00
Brand Guidelines7h$150/h$1,050.00
Marketing Strategy3.5h$150/h$525.00
Total Due$3,675.00
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Service billing math for Vietnam

What this calculation answers

A Vietnam billable-hours calculation answers three practical questions: how much approved service time is chargeable, what the VAT-exclusive service value is in VND, and what the client-facing VAT-inclusive total becomes. For ordinary domestic professional services, Vietnam's VAT Law starts from the 10% standard-rate rule for goods and services outside the 0% and 5% categories.

For eligible standard-rate goods and services, Resolution 204/2025/QH15 reduces the 10% VAT rate to 8% from July 1, 2025 through December 31, 2026. That reduction excludes specified sectors, including telecommunications, finance, banking, securities, insurance, real estate, certain metals and minerals, and special-consumption-tax goods and services. The calculation must therefore separate the service value from the tax decision.

Build the pre-tax service value

Start with approved billable hours by role, task, or service line. Multiply each hour total by its agreed hourly rate, then add the line values. For example, a Vietnam implementation project includes 42 approved consultant hours at VND 1,200,000 per hour and 18 approved quality-review hours at VND 900,000 per hour.

The consultant line is VND 50,400,000, and the quality-review line is VND 16,200,000. The VAT-exclusive service value is VND 66,600,000. If the service qualifies for the temporary 8% standard-rate reduction, VAT is VND 5,328,000, making the VAT-inclusive invoice total VND 71,928,000. If the service is not eligible for the reduction, use the applicable VAT treatment instead.

Keep invoice timing separate

Do not treat payment date as the only event that matters. For services in Vietnam, VAT is determined when service provision is completed or when the service invoice is issued, regardless of whether the invoiced amount has been paid. Vietnamese invoices for services must be issued upon completion of service provision, whether or not payment has been received.

If payment is collected in advance or during performance, an invoice is issued when each payment is collected, with specified deposit exceptions for several professional services. A service invoice must show the VAT-exclusive amount, VAT rate, VAT amount, and VAT-inclusive total. That layout keeps the billable-hours math readable and gives the client the tax breakdown needed for review.

When a calculator is enough

A one-off calculation is enough when the work is finished, the approved hours are final, the VAT treatment is clear, and the invoice has only a few service lines. It is also enough for checking whether an agreed quote still matches the actual VND value of billable time before the invoice is issued.

A managed workflow is better when projects run across billing periods, budgets, deposits, or mixed billable and non-billable work. Everhour Project Budgeting supports hour-based and money-based budgets, recurring budget periods, threshold email alerts, budget protection, and expense inclusion controls, so teams can monitor service value before the Vietnam invoice is assembled.

This content is for general information only, may not be fully up to date, and is provided without any warranty or liability.

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Frequently Asked Questions

How do you calculate a Vietnam service invoice from approved hours?

Multiply each approved billable-hour line by its hourly VND rate, then add the line values to get the VAT-exclusive service amount. Apply the correct VAT rate or treatment after that. For eligible standard-rate services from July 1, 2025 through December 31, 2026, the temporary rate is 8% under Resolution 204/2025/QH15.

What VAT rate applies to domestic professional services in Vietnam?

Vietnam's VAT Law applies the 10% VAT rate to goods and services not covered by the 0% or 5% rate categories, so ordinary domestic professional services start from that standard-rate rule. Eligible standard-rate goods and services receive an 8% reduced rate from July 1, 2025 through December 31, 2026, except for excluded sectors.

When do exported services use 0% VAT in Vietnam?

Exported services qualify for the 0% VAT rate when they are provided directly to overseas organizations or individuals and consumed outside Vietnam. Listed exclusions still matter, including offshore IP transfer, offshore reinsurance, credit extension, capital transfer, derivatives, and post or telecommunications services. Confirm the service category before applying 0%.

Which invoice fields should match the billable-hours calculation?

The invoice should match the calculation line by line: service name, quantity or service cycle where applicable, unit price where required, VAT-exclusive amount, VAT rate, VAT amount by rate, total VAT payable, and VAT-inclusive total. A mismatch between approved hours and the VAT-exclusive amount is the fastest way to create a client dispute.

What happens if the contract does not set a payment date?

If the parties have no agreement and no established payment custom, the statutory payment time for services is when service provision is completed. For delayed payment of service charges or other reasonable fees, the aggrieved party may claim interest for the delayed period at the average market interest rate for overdue debts, unless the contract or law provides otherwise.

How does Everhour support budget control before Vietnam invoicing?

Everhour Project Budgeting tracks hour-based and money-based budgets as time and expenses are logged. Teams can use recurring budget periods, 75%, 90%, 100%, or custom threshold email alerts, and budget protection that stops timers or prevents extra logging after a budget is exceeded.

Control billable work before invoicing

Track budgeted hours, spending thresholds, and billable progress before the invoice is prepared. Everhour Project Budgeting gives teams earlier visibility into service value and budget risk.

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