keyword

invoice

Monthly search volume and cost-per-click data for "invoice" in US.

$ curl "https://app.seodata.dev/v1/search-volume?q=invoice" +--------------+------------------+ | volume | 135,000 | | cpc | $13.39 | | competition | 0.62 | | country | US | | updated | 2026-03-29 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
invoices	135,000	$13.39	20/20
create invoice free	27,100	$12.59	20/20
create invoice	9,900	$19.54	19/20
online invoices	3,600	$20.64	20/20
invoice online	2,900	$27.98	20/20
invoices online	2,900	$27.98	20/20
online invoices free	1,900	$12.97	20/20
invoice free	1,600	$18.94	20/20
invoices free	1,600	$7.83	20/20
online invoicing free	1,600	$12.71	20/20

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/search-volume?q=invoice" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt