An online payments feature is paying off for e-commerce technology company Shopify Inc.

Shopify says it increased revenue by nearly 100% year over year for the fourth quarter and full year ended Dec. 31. Shopify provides cloud-based e-commerce technology online retailers and business-to-business clients.

Strong demand for its Shopify Payments feature, which lets merchants accept and track online credit card payments from customers was the primary reason for a 140% increase in Q4 revenue from e-commerce website applications, to $35.6 million from $14.8 million a year earlier. Shopify also said an increase in its number of client merchants drove a 70% increase in revenue from companies that subscribe to its e-commerce platform, to $34.6 million from $20.4 million. Total Q4 revenue exceeded $70 million.

Shopify didn’t say how many clients it gained in the quarter, but says its total number of clients is more than 240,000.

The vendor has six e-retailer clients in the Internet Retailer Top 1000, including eForCity Corp. and BHFO Inc., Nos. 353 and 462 respectively, according to Top500Guide.com.

For the fourth quarter ended Dec. 31, Shopify reported:

• The value of gross merchandise volume transacted on its e-commerce software by its clients rose 109% to $2.80 billion from $1.34 billion a year earlier;
• Total revenue increased 99% to $70.2 million from $35.3 million;
• Its net loss widened to $6.3 million from $4.8 million, as the company absorbed large increases in costs related to sales-and-marketing and research-and-development operations.

For the year ended Dec. 31, Shopify reported:

• Total revenue increased 95.4% to $205.2 million from $105.0 million a year earlier;
• Net loss narrowed to $18.8 million from $22.3 million.