Plusnet has launched a range of fixed price broadband and line rental contracts for residential customers.
This means that if a person takes out a contract, their broadband and line rental costs will be fixed for the duration of their minimum contract term.
The offer applies to customers who are signing up to a new contract, recontracting or changing product.
Subscribers will then be offered a personal account review when their fixed price contracts are about to expire.
The fixed price applies only to the broadband and line rental service, which means extras such as call plans, call charge rates and sports channels remain subject to price changes.
This follows TalkTalk's introduction of Fixed Low Price Plans, which guarantee no mid-contract price hikes.
More than two million customers have so far chosen to take advantage of this offer since it was first introduced nearly two years ago.