Stable income: Somewhat stable

The Substack newsletter business can provide a moderately stable income source for most people who try it. Based on online research and observations, individuals can expect fluctuations in earnings with some months more predictable than others. While there is a decent baseline income potential, it may not always be consistent. I'd rate it a 2 out of 3 because there is potential for regular income, but it may not match the stability of a traditional job.