The conservation status of the Ruby-crowned Tanager is listed by the IUCN Red List as Least Concern (BirdLife International 2016). It received this classification due to its large estimated range of 1,360,00 km2 (BirdLife International 2016). Although population size has not been quantified, it has been described as a common species and there is no evidence of population declines or major threats (BirdLife International 2016). There was no difference in abundance of this species between large and small forest fragments (Giraudo et al. 2008). There was an insignificant decline in abundance since 1941 in Paratí, Brazil (Browne 2005). Parker et al. (1996) considered this species of "low" conservation priority relative to other Neotropical birds.
Effects of human activity on populations
Parker et al. (1996) considered the Ruby-crowned Tanager to have a "low" degree of sensitivity to human disturbance relative to other Neotropical birds. The Ruby-crowned Tanager can live along the edges of fragmented habitats and has little to no signs of physical effects of the fragmented areas (Anciães and Marini 2000). The abundance of the species did not change or increase from before and after a fire disturbance in São Paulo, Brazil (Willis 2003a, Willis 2003b). They are uncommon but regularly encountered in the illegal trade of wild birds (Ferreira and Glock 2004, Nunes et al. 2012, de Olivera Souza et al. 2014, de Freitas et al. 2015).
The Ruby-crowned Tanager is known from numerous protected areas including: Argentina: Turvo Forest Reserve in Yabotí Biosphere Reserve (Belton 1985), Urugua-í Provincial Park (Barzan et al. 2015), Cruce Caballero Provinvial Park (Capllonch et al. 2015); Brazil: Parque Tenente Siqueira Campos (Mitchell 1957), Morro do Diabo State Park (de Vasconcelos and Roos 2000), Araucárias State Park (Ghizoni Jr. 2009), Mata dos Godoy State Park (dos Anjos et al. 1997), Superagüi National Park (N.P.), Restinga de Jurubatiba N.P. (Gomes et al. 2010), Área de Proteção Ambiental Bacia do Paraíba do Sul (Gussoni and Campos 2004), Parque Copesul de Proteção Ambiental (Arzua et al. 2005), Reserva Particular do Patrimônio Natural (RPPN) Bugerkopf, Parque Natural Municipal São Francisco de Assis (Brandt 2008), RPPN Ninho do Corvo (Vogel et al. 2010), Augustoa Ruschi Biological Reserve, Itatiaia N.P., Tijuca N.P., Iguaçu N.P. (Parker and Goerck 1997), Santa Genebra Reserve (Galetti and Pizo 1996), Reserva Natural Salto Morato (Kriech et al. 2005, Straube and Urben-Filho 2005), Parque Ecológico do Tietê (Laporta et al. 2008), Reserva Biológica de Poço das Antas (Pacheco and Nascimento 2010), Irati National Forest (Volpato et al. 2010), Parque das Manções (Moreno 2011), Parque Estudual dos Três Picos (Parrini and Pacheco 2011), Reserva Ecológica de Guapiaçu (Pimentel and Olmos2011), Parque Estudual Intervales (Silva and Gomes 2002), Parque Municipal da Lagoa do Peri (Pedrini 2015), Arvoredo Marine Biological Reserve (Vieira et al. 2015), Capivari-Monos Environmental Protect Area (Melo et al. 2016); Paraguay: Ybycuí N.P. (Hayes and Scharf 1995), San Rafael N.P. (Ogrzewalska et al. 2014).