Committed vs. Discretionary Costs

Categorizing the cost base

Committed costs are contractually fixed for some period: a 5-year office lease, a 12-month software contract paid annually, salaried staff (which can be terminated but with severance, notice, and morale costs), debt principal and interest.

Discretionary costs can be turned off or down with little notice: marketing campaigns, travel, conference attendance, contractor engagements, training budgets, hiring (the next planned hire). Walking through the trial balance and tagging each line as one or the other takes 30 minutes and is worth doing once a year.

Why the ratio matters

In a cash crunch, you can only cut discretionary costs quickly. A business where 90% of expenses are committed has almost no short-term flex. A business where 60% are discretionary can cut spend dramatically in a single month if needed.

This is one reason 'profit-first' principles favor variable structures (contractors over employees, monthly software over annual contracts, performance marketing over brand campaigns). The headline rate is sometimes higher; the resilience is much higher.

Why the split matters in a downturn

In a 30% revenue-decline scenario, only the discretionary cost line items can be cut quickly. Marketing spend, contractor budget, travel, software experiments, and bonus pools can all be cut within a quarter. Rent, debt service, salaried payroll, and multi-year software commitments are committed and can't be cut without breaking contracts or laying people off. Knowing the ratio in your business tells you how much shock the cost base can actually absorb.

A healthy operating-business cost structure typically has 30-50% discretionary costs — enough flexibility to weather a downturn without immediate layoffs but not so much that the business is sub-scale on essential capabilities. If 80% of your costs are committed, you have very little room to maneuver in a bad quarter and need a much larger cash reserve to compensate.

Audit committed costs annually for renewals and right-sizing. Long-tail SaaS subscriptions, unused real estate, and bloated insurance policies all tend to drift upward without anyone deliberately deciding to keep them. A formal annual review of every multi-year commitment over $5k typically finds 5-15% of cost that can be cut without damaging operations.

Tag every line of the operating budget as committed or discretionary in the accounting system itself, not just in a separate model. When reports run automatically split that way, leadership sees both buckets every month and can act on the discretionary portion without rebuilding the analysis. The transparency tends to keep discretionary spending honest over time.