Why does our startup runway keep shrinking faster than our projections?

A static financial model built at a point in time is used as the operating runway timeline while actual burn accelerates beyond the model assumptions — producing a Runway Accuracy Gap that grows silently between quarterly board reviews.

The distortion lives in the model update cadence — runway projections are built once at planning time and reviewed quarterly while actual burn diverges from assumptions monthly creating a gap that compounds between reviews

Hiring front-loading infrastructure step functions and revenue timing slippage all cause actual burn to exceed model projections simultaneously during growth phases — the compound effect produces Runway Accuracy Gaps above twenty-five percent within one to two quarters

Every decision made on the twelve-month projected timeline was made with five months of false cushion — hiring approvals GTM investments and fundraising timing all require reassessment against the seven-month actual revised runway