The Salvation Army is shutting down its emergency counselling phone hotline after operating it for more than 30 years.

The Salvos, as the Christian organisation is commonly known, said the telephone service would close at the end of June. It has been running since 1983.

The decision was made as part of an internal Salvation Army review that's "considering the best possible means by which The Salvation Army can serve the Australian community".

"The review by senior Salvation Army leadership and independent external experts commenced two years ago and aims to determine the long-term viability of all the services The Salvation Army currently runs," the Salvos said in a statement on Wednesday.

The organisation flagged further changes to its services.

"Some programs and Salvation Army churches will close, have support funding reduced or be amalgamated as part of the overall review," it said.

Last year, the Salvos blamed a shortfall in revenue from its annual Red Shield Appeal Doorknock on the tough federal budget, and Salvation Army-related revelations before the child abuse Royal Commission.

Each year, the Salvos help hundreds of thousands of Australians, including many people impacted by homelessness.