seodata.dev

keyword

underpayment tax penalty

Monthly search volume and cost-per-click data for "underpayment tax penalty" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=underpayment+tax+penalty&country=us" +--------------+------------------+ | volume | 4,400 | | cpc | $0.99 | | competition | 0.02 | | country | US | | updated | 2026-06-12 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
underpayment penalty 6,600 $0 20/20
irs underpayment penalty 5,400 $2.71 20/20
underpayment penalty irs 5,400 $2.71 18/20
underpayment penalty tax 4,400 $3.34 18/20
estimated tax penalty 1,900 $1.54 20/20
estimated tax underpayment penalty 1,600 $0 20/20
how much is the penalty for not paying estimated taxes 1,600 $8.25 20/20
underpayment of estimated tax penalty 1,600 $0 20/20
what triggers irs underpayment penalty 1,000 $0 20/20
underpayment tax 210 $8.16 19/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/keyword?q=underpayment+tax+penalty&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt