VAT Calculator (South Africa)

Add 15% VAT to a price, or take the VAT out of a VAT-inclusive price. Amounts are in rand.

Bookkeeping Formula Reference

Every formula used by these calculators. They match the FNSACC323 Perform financial calculations unit.

Tax
GST: Add
Price inc GST = Price ex GST × 1.1
e.g. $100 × 1.1 = $110
GST: Remove
Price ex GST = Price inc GST ÷ 1.1
e.g. $110 ÷ 1.1 = $100
GST: Find Amount
GST = Price inc GST ÷ 11
e.g. $110 ÷ 11 = $10
Business
Markup
Selling Price = Cost + (Markup% × Cost)
e.g. Cost $50, Markup 20% → SP = $50 + ($50 × 0.20) = $60
Profit Margin
Selling Price = Cost ÷ (1 − Margin%)
e.g. Cost $50, Margin 20% → SP = $50 ÷ 0.80 = $62.50
Sales Commission
Commission = Rate% × Total Sales
e.g. $10,000 sales at 5% → Commission = $500
Simple Interest
Simple Interest
Interest = Principal × Rate × Number of Periods (T)
I = P × R × T
e.g. $300 at 2% for 1 year → I = $300 × 0.02 × 1 = $6
Total Value / Total Repayable
Total = Principal + Interest
e.g. $300 + $6 = $306
Compound Interest
Future Value (Compound)
FV = PV × (1 + i/n)^(n×t)
PV = present value, i = annual rate, n = periods/year, t = years
Present Value
PV = FV × (1 + i/n)^(−n×t)
How much to invest now to reach a future target
Loan Repayment
Repayment = P × [rp × (1 + rp)^N] ÷ [(1 + rp)^N − 1]
rp = rate per period, N = total periods
Depreciation
Straight Line: No Residual
Depreciation = Total Cost ÷ Effective Life
e.g. $11,000 ÷ 5 yrs = $2,200 per year (same each year)
Straight Line: With Residual
Depreciation = (Total Cost − Residual) ÷ Effective Life
e.g. ($11,000 − $1,000) ÷ 5 = $2,000 per year
Diminishing Value: Rate
Rate % = 200% ÷ Effective Life
e.g. 200 ÷ 12 yrs = 16.67%
Diminishing Value: Depreciation
Depreciation = Rate % × Carrying Amount
Applied to the reducing book value each year, bigger early, smaller later

GST Calculator (Australia)

GST Rate: 10%
$

Results

Enter your details to see the result

Markup / Profit Margin

Markup calculates profit as a percentage of the cost price. Profit Margin calculates profit as a percentage of the selling price.

SP = Cost + (Markup% × Cost)
$
%

Results

Enter your details to see the result

Sales Commission

Commission = Rate% × Total Sales
$
%
$

Results

Enter your details to see the result

Break-Even Point

Units = Fixed Costs ÷ (Price − Variable Cost)

Fixed Costs stay the same no matter how much you sell (e.g. rent, insurance). Variable Cost is what it costs to make or deliver one single unit (materials, packaging, per-item shipping) — it goes up and down with sales, unlike fixed costs. Selling Price is what you charge per unit.

$
$
$

Results

Enter your details to see the result

Simple Interest

I = P × R × T
$
%

Results

Enter your details to see the result

Compound Interest

FV = PV × (1 + I)ᴺ
$
%
$

Results

Enter your details to see the result

Present Value

PV = FV × (1 + I)⁻ᴺ
$
%

Results

Enter your details to see the result

Depreciation

Depn = (Cost − Residual) ÷ Life
$
$

Results

Enter your details to see the result

Time to Decimal

Decimal Hours = Hours + (Minutes ÷ 60)
hrs
min

Results

Enter your details to see the result

Pay Calculator (Before Tax)

Gross Pay = (Rate × Ord. Hours) + (Rate × OT × OT Hours)
$

Results

Enter your details to see the result

GST / VAT / Sales Tax Calculator

Rate: 15%
%
$

Results

Enter your details to see the result

How to calculate VAT in South Africa

The standard rate of VAT in South Africa is 15%. Some basic foods and exports are zero-rated.

Add VAT

Price inc VAT = Price ex VAT × 1.15

Remove VAT

Price ex VAT = Price inc VAT ÷ 1.15

Find the VAT in a total

VAT = Price inc VAT × 15 ÷ 115

Example. A R1,000 price before VAT becomes R1,000 × 1.15 = R1,150. The VAT is R150.

A R1,150 total contains R1,150 × 15 ÷ 115 = R150 of VAT.

The common mistake

Taking 15% off a VAT-inclusive price does not remove the VAT. 15% of R1,150 is R172.50, not R150. Divide by 1.15 instead.

Tax rates and thresholds change. Check the current rules with SARS before relying on a figure.

Frequently asked questions

What is the VAT rate in South Africa?

15% at the standard rate.

How do I remove VAT from a price?

Divide the VAT-inclusive price by 1.15. R115 ÷ 1.15 = R100.

What is the VAT fraction at 15%?

15/115, which simplifies to 3/23. Multiply a VAT-inclusive price by 3 and divide by 23 to get the VAT.

Tax calculators for other countries