Commitment Accounting: Promises Are Checks You Have to Cover

Don't bounce a check.

That is the most important piece of professional advice I have ever given, and I have probably given it more times than any other single piece of guidance in my career. Not "be excellent." Not "invest in relationships." Not "work hard."

Don't bounce a check.

Commitments as Financial Instruments

A commitment is a check drawn against your credibility account. When you make a promise — "I'll have that analysis to you by Friday," "I'll make the introduction next week," "we'll hit the Q3 target" — the person receiving that promise has done something with it. They built their own plans around it. They made commitments of their own downstream. They allocated their attention accordingly.

The check is in circulation. It is real.

When you miss the commitment, the check bounces. The person who received it now has to deal with the consequences: the plans they built, the commitments they made, the expectations they set — all of those ripple. And they do it while simultaneously updating their model of you as someone whose word is unreliable.

The reputational cost of a bounced check is far larger than the value of the original commitment. This asymmetry is why commitment accounting is not about perfectionism — it is about understanding the actual economics of professional trust.

The Progressive Cost Model

Every favor has a cost. Each subsequent ask to the same person costs more than the last.

This is not because people are keeping a ledger. It is because every ask shifts the relationship dynamic slightly. The relationship started as symmetric, or perhaps with you in the slightly stronger position (you were the one who had something to offer). Each ask tilts it incrementally toward extraction. Eventually, the tilt is obvious to both parties, and the person you have been asking starts to experience your name in their inbox as a drain rather than a resource.

The fix is simple but requires discipline: earn between asks. If you make an ask, then do something that deposits currency — recognize their work, make an introduction that benefits them, deliver something above expectations on a shared project — then make another ask, the relationship stays healthy. The ask resets.

The pattern that destroys relationships is continuous extraction: ask, ask, ask, occasionally deliver the minimum expected, ask again. Nobody does this deliberately. It happens because people focus on what they need to get done and stop tracking what they are putting in.

What to Do When You Cannot Deliver

Life happens. Commitments get made based on projections that later prove wrong. The scope changes, the blocker arrives, the priority shifts.

The principle here is simple: the cost of renegotiating early is a fraction of the cost of missing the deadline.

If I commit to Friday and by Wednesday I know I cannot make it, a Wednesday conversation — "I've hit a snag and I need to push to Monday, does that work?" — is a professional act. It respects the other person's planning. It demonstrates awareness of the impact. It costs some credibility (the commitment was made in good faith and turned out to be wrong), but not much.

A missed Friday deadline, followed by no communication, followed by a Saturday "I'll get it to you next week" message? That is a bounced check. The full cost, plus the cost of the silence.

The Scale Problem in Fast-Moving Organizations

In organizations that move quickly, commitment density is high. Commitments are being made constantly — in stand-ups, in Slack, in emails, in quarterly planning. Most of them are tracked informally, which means most of the failures are also tracked informally: in people's memories and their updated assessment of whether you are reliable.

This is why I have always believed that the most undervalued professional practice is closing the loop. When you complete something you said you would do, send a message confirming it. Not because the other person needs the notification — they will find out — but because actively closing the loop is a signal that you are tracking your commitments and taking them seriously. It deposits currency.

"Spend time like an accountant" is advice I have given for years. Know what is in the account. Know what checks are outstanding. Do not write checks you cannot cover.

Part of the Thought Leadership series — Thread 1: People, Culture & Organizational Systems. Related: [[T05-corporate-currency]], [[T06-look-at-me-tax]], [[T08-career-wealth-time-horizons]]