Truck Accessories Customer Acquisition Cost in New Zealand: What You Can Afford

What Belongs in Acquisition Cost

Acquisition cost is the paid and attributable cost of winning a first-time customer. Include advertising spend, paid creator or affiliate commissions, agency or freelancer fees for acquisition campaigns, and campaign-specific creative or landing-page production. Include a discount only if you are deliberately treating it as a cost of acquiring the customer; otherwise record it as a reduction in revenue. Keep the rule consistent.

Exclude product cost, pick-and-pack, freight, delivery, payment processing, refunds and other fulfilment costs. Those affect order or contribution margin, not the cost of winning the customer. Exclude email, SMS, loyalty and other retention activity unless the specific activity is intended to convert a new customer. A campaign aimed at previous buyers belongs in retention, even if it produces another order.

Choose one tax basis before comparing results. GST in New Zealand is charged at a rate of 15% (Inland Revenue (Te Tari Taake), GST); use GST-exclusive revenue and costs when your accounts report that way, or GST-inclusive figures consistently when they do not. Do not mix currencies or tax treatments. A practical starting point is the CAC calculator. ORVX can connect Shopify orders, products and customers with advertising accounts, while counting revenue from delivered orders only and showing customer-level profitability and repeat behaviour (Source: Inland Revenue (Te Tari Taake)).

• Include: prospecting ads, acquisition-focused creative, agency fees, affiliate commissions and first-order acquisition incentives.
• Exclude: product cost, fulfilment, shipping, refunds and retention campaigns unless the expense was specifically part of acquiring the new customer.

First-Order Margin as a Ceiling

First-order contribution sets the strictest ceiling for truck accessories customer acquisition cost in New Zealand. If acquiring a customer costs more than the contribution from that customer's first delivered order, the order loses money before any repeat purchase is considered. A sustainable starting rule is therefore: maximum first-order CAC = first-order contribution before advertising. That is a ceiling, not necessarily a target; overhead, risk and cash timing may justify a lower limit.

Do not use the amount charged to the customer as usable margin. Inland Revenue (Te Tari Taake) states that GST in New Zealand is charged at 15%, so a $1,000 GST-inclusive order represents $869.57 before GST. If product cost is $500, outbound freight subsidy $80 and payment fees $25, usable first-order contribution is $264.57. A $300 CAC therefore produces a $35.43 loss, despite $1,000 in cash collected (Source: Inland Revenue (Te Tari Taake)).

Gross sales and cash collected are useful for measuring demand and liquidity, but neither shows what can fund acquisition. Gross profit subtracts product cost; usable contribution also accounts for other order-level costs such as freight, payment fees, discounts and expected returns. ORVX can calculate realized revenue from delivered orders, model gross profit and margins, and report contribution after advertising. Use the CAC calculator to test the ceiling with your own costs.

How Repeat Orders Change the Limit

A higher acquisition limit is defensible only when later contribution is measured, not assumed. Separate customers into acquisition cohorts, then compare each cohort’s first delivered order with its subsequent delivered orders. For illustration only, if the first order contributes NZ$40 after variable costs and advertising, and a repeat order contributes NZ$55, a 70% repeat rate produces NZ$38.50 of expected later contribution per acquired customer (NZ$55 × 70%). The indicative lifetime contribution is therefore NZ$78.50 before allowing for a safety buffer, returns, and the time needed to recover the acquisition spend.

That limit should come from observed cohort behaviour, not a target repeat rate. Use first-order CAC when cash recovery and immediate payback matter. Use cohort contribution when deciding how much to invest in customers likely to buy add-ons or replacements. A blended CAC can hide the distinction by combining new and returning customers; it is useful for reviewing total efficiency, but not for setting the first-order acquisition limit. ORVX shows customer-level profitability and repeat behaviour, while calculating revenue from delivered orders rather than cancelled or returned orders. Calculate CAC using separate first-order and repeat assumptions.

Reading the Worked Example

Read the worked calculation from inputs to decision: acquisition spend and the number of first-time customers produce the observed CAC, while delivered-order revenue, product cost and other included variable costs determine the contribution available to support it. Check that the numerator contains only attributable acquisition costs and that the customer count excludes existing customers. The result is a measurement of what happened under those inputs, not a target to spend toward.

Treat the ceiling as a boundary, not a forecast. If the calculation uses GST-inclusive sales, confirm that costs and revenue are treated consistently; Inland Revenue (Te Tari Taake) states that “GST in New Zealand is charged at a rate of 15%.” Also note whether returns, cancellations, freight, payment fees or agency costs are included. Repeat purchases should not be treated as certain unless the calculation explicitly uses measured cohort contribution.

The sensitivity view shows which assumption changes the answer most. Test spend, new-customer volume, margin and return-related costs one at a time, then compare the revised CAC with the ceiling. Use the CAC calculator to test the same logic with your store’s inputs.

Tracking CAC by Channel

Blended CAC is total acquisition cost divided by all first-time customers in the period. For illustration only, $12,000 across ads, creators and affiliates divided by 100 new customers produces a $120 blended CAC. Use it as the business-level guardrail: it shows what growth actually cost, including spend that channel reports may overlook.

Campaign CAC divides the cost of one campaign by the first-time customers attributed to it. It is useful when deciding whether to extend a ute-canopy promotion, change its creative or stop it. Channel-level CAC applies the same calculation to Google, Meta, affiliates or another source, supporting budget allocation. A channel can look efficient while the blended figure worsens if it receives incremental spend or if other acquisition costs are excluded.

Keep the rules fixed across every view: define a first-time customer, choose the same attribution window, decide how returning customers and shared conversions are handled, and use the same spend period. Otherwise, a campaign may claim a sale that the channel and blended reports count differently. Reconcile channel totals to the blended result before acting; use the CAC calculator with one consistent input set.