  Despite the prevalence of jets in accreting systems and their impact on the
surrounding medium, the fundamental physics of how they are launched and
collimated is not fully understood. Radio observations of local compact
objects, including accreting stellar mass black holes, neutron stars and white
dwarfs, probe their jet emission. Coupled with multi-wavelength observations,
this allows us to test the underlying accretion-outflow connection and to
establish the relationship between the accretor properties and the jet power,
which is necessary to accurately model jets. Compact accretors are nearby,
numerous and come in a range of accretor properties, and hence are ideal probes
for the underlying jet physics. Despite this there are a number of key
outstanding questions regarding accretion-driven outflows in these objects that
cannot be answered with current radio observations. The vastly improved
sensitivity, polarization capabilities, spatial resolution and high-frequency
coverage of the ngVLA will be crucial to answering these, and subsequently
determining the fundamental physics behind accretion and jets at all physical
scales.
