I have a Betterment taxable account set to 100% stocks. I was considering turning on TLH, since I have now maxed my ROTH IRA contributions. My Roth IRA is 100% VTSAX. Do I need to turn off auto-invest dividends/capital gains to avoid a wash sale with Betterment's VTI ETF? If so, is it worth it? I only have $2000 in the Betterment account right now, with planned contributions of $1000/month. I also have a TSP that I max out, which is invested in 100% C FUND - the equivalent of IVV; I've read that I should not have to worry about IVV washing anything in Betterment.
Current Betterment ETFs: VTI, VTV, VOE, VBR, VEA, and VWO.
I will eventually move all of my taxable accounts to Vanguard once I have a better understanding of cost-basis, TLH, etc.