Open to Buy (OTB) is the amount of budget or inventory a business has available to purchase within a specific period, after accounting for current stock, sales, and planned intake. It helps teams understand how much they can buy without over‑ or under‑investing.
Why OTB Matters
Inventory control: OTB helps teams avoid overstocking and understocking by ensuring buying decisions align with real‑time stock levels and future demand.
Sales tracking: Because OTB adjusts as sales happen, it keeps the buying plan grounded in actual customer behaviour rather than static forecasts.
Operational efficiency: OTB supports smoother intake planning, reduces cash flow strain, and ensures supply chain teams aren’t overwhelmed with unplanned volume.
Common Use Cases
- Tracking intake: Ensuring future deliveries align with sales patterns and seasonal demand.
- Analysing sales and stock: Adjusting buys based on what’s selling faster or slower than expected.
- Managing terminal stock: Preventing end‑of‑season overhang by tightening buys as the season matures.
- Supporting future buying decisions: Helping merchandisers decide where to invest more deeply and where to pull back.
Related Terms
- WSSI
- Inventory Management
- Product Lifecycle
- Merchandising Strategy
- Commitment
- Forecast Accuracy
What OTB Really Tells Us
OTB is more than a metric or KPI, it’s a story about how well a business listens to its own ecosystem. OTB reveals the tension between ambition and reality: what we planned to happen, what customers are actually doing, and how confidently we’re willing to respond. It’s a living conversation between data, intuition and timing.
When we look at OTB through a systems lens, it becomes a measure of organisational alignment. Healthy OTB signals alignment between teams. Unhealthy OTB – too tight, too loose, or constantly reactive – often points to deeper issues: forecasting blind spots, siloed decision‑making or a lack of shared understanding about customer behaviour.
OTB forces us to pay attention to what customers are telling us through their choices, not just what we hoped they would buy. It invites strategic storytelling, because every adjustment to OTB reflects a shift in the story of demand. And it challenges leaders to balance confidence with humility. To know when to lean in, when to pause, and when the system is signalling a change.
Ultimately, OTB is a pulse check on the business’s ability to grow sustainably. It shows whether we’re investing with intention, adapting with intelligence, and designing a future that respects both opportunity and risk. When treated as a dynamic signal rather than a rigid control, OTB becomes one of the most powerful tools for building a resilient, human‑centred merchandising strategy.
