US software firms are facing massive tax bills due to a change in tax law that no longer allows them to fully expense research and development costs in the year they are incurred. This change is causing cash flow problems for many small businesses, forcing them to take out loans or consider staffing reductions. The issue is particularly problematic for startups that rely on software development talent and may not have the funds to absorb the increased tax costs. A bipartisan bill has been introduced to retroactively fix the issue, but its passage is uncertain.