Amendments from the House of Lords will be debated on Wednesday.
MPs have been urged to back charity exemptions for proposed National Insurance rises in a Westminster debate.
On Wednesday the House of Commons will hold a debate on the National Insurance Contributions (NIC) (Secondary Class 1 Contributions) Bill, where amendments passed in the House of Lords will be considered.
The Scottish Council for Voluntary Organisations (SCVO) estimates that changes to employer NICs will cost voluntary sector employers in Scotland £75million per year, plus inflation, putting essential services, jobs, and organisations at risk.
SCVO is calling for MPs to support measures that would ensure voluntary organisations are not out of pocket - through exemption, remuneration, or other means.
They also want MPs to ensure grants and contracts awarded by the UK government, their agencies, and other public bodies, cover the full costs of employing staff.
That includes not just increased employer NICs costs, but payment of at least the Real Living Wage, and inflation-based uplifts. Devolved administrations should also be resourced to cover these costs.
SCVO chief executive, Anna Fowlie, said: “The Treasury decision to increase employer National Insurance Contributions will cost medium and large voluntary organisations in Scotland at least £75m each year. Some organisations face additional costs of hundreds of thousands of pounds.
" Peers in the House of Lords recognised the impact of these additional costs on voluntary organisations, both across Scotland and the rest of the UK, and the essential services and support our sector provides. SCVO welcomes this recognition and support.
"Peers have heard from, and crucially, listened to, organisations across the voluntary sector about the pressures they face and how these will be exacerbated by increased National Insurance costs, ultimately impacting the people and communities our sector supports.
"We encourage the Chancellor to reflect on the case made by Peers, and indeed, voluntary organisations, on the impact of these cost increases for a voluntary sector that has been under pressure for many years. Our sector continues to wrestle with the challenges of the cost of living crisis: rising costs and growing demand while voluntary sector incomes stagnate.
"It is imperative that the Chancellor engages with the growing evidence of the impact of these additional costs on the voluntary sector, our staff, volunteers, and the essential services and support our sector provides people and communities, all of which are essential building blocks to the economic growth the chancellor is striving to achieve.
"I thank Peers for their support and engagement on this issue and encourage a similar level of engagement when this Bill returns to the House of Commons.”
