Ramp vs Brex for a DTC Brand's Promotion-Week Spend

Setting one card limit high enough to cover the worst-case overlap, peak ad spend plus an inventory deposit plus a freight surcharge landing the same week, means the limit is rarely the binding constraint. The tradeoff is that a limit sized for the busiest week of the year sits mostly unused the other fifty weeks, which can work against a brand if the underwriting model ties available credit to trailing revenue rather than a flat number.

This approach favors a brand whose spend is genuinely lumpy around a handful of promotions each year, where a high ceiling matters more than fine-grained control between events.

Splitting ad spend, inventory deposits, and fulfillment fees into separate limits that each flex on their own means a promotion doubling ad spend doesn't eat into the budget reserved for an inventory deposit due the same week. The tradeoff is more setup: someone has to decide what each category's ceiling should be and keep adjusting it as the brand's spend mix shifts across a growth stage.

This approach favors a brand running frequent, smaller promotions rather than a handful of major ones, where the categories genuinely compete for the same undifferentiated limit throughout the year.

An early brand running one or two major promotions a year, Black Friday and a summer sale, say, gets more value from a single high ceiling than from the overhead of managing several category limits. A brand running promotions monthly or more often, where ad spend, inventory, and fulfillment costs are all moving targets most weeks of the year, benefits more from category-specific flexibility, since a single ceiling stops being predictable once nothing about the spend pattern is seasonal anymore.

The mistake to avoid is picking the approach that matched the brand's stage two years ago and never revisiting it as the spend pattern changed.

Choose your limit structure with these rules of thumb:

• A brand running only a few big promotions a year is usually better served by a single high limit sized for its busiest week.
• A brand promoting monthly or more often suits separate category limits for ad spend, inventory deposits and fulfillment fees that flex independently.
• Keep ad spend and supplier deposits off the same undifferentiated line, so a mid-promotion ad surge cannot crowd out a deposit due that week.
• Treat a card limit as short-term float, and fund inventory through a working capital line priced against the prime rate.

Marketing spend for a growing direct-to-consumer brand often lands in the high single digits as a share of revenue, close to what SaaS Capital's research finds for marketing budgets as a percentage of ARR at private B2B companies¹, which is a useful gut check when deciding how much headroom a card program needs to carry through a promotion. A brand whose ad spend regularly approaches or exceeds that share of revenue during a launch week needs a card program built for that reality, not one sized for an average month.

Fulfillment fees and freight surcharges tend to be smaller individually but land in the same tight window, which is exactly why they belong in the headroom calculation alongside ad spend rather than as an afterthought.

Ramp's ability to adjust a category limit quickly, without a formal credit review each time, suits a brand running frequent promotions where the spend mix shifts often. Its expense automation also helps sort a large volume of small fulfillment and app subscription charges without someone doing it by hand each month.

A brand carrying larger cash reserves it wants to put to work between inventory purchase cycles, or one running international freight and needing multi-currency support, gets more from Brex's treasury tools and global spend features. A brand relying on a working capital line to fund inventory ahead of a promotion should also remember that line is priced against the prime rate, not against whatever a card's short float period would effectively cost².

The brands that get caught out most often are the ones running paid ad spend and inventory deposits through the exact same undifferentiated limit, so a mid-promotion ad spend surge quietly eats into the room needed for a supplier deposit due the same week. Nobody notices until the deposit payment fails or gets delayed, at which point a supplier relationship absorbs the cost of a card design choice.

Separating the two, even with a simple category split rather than a full category-by-category system, removes the single most common way this goes wrong.