Depending upon where your new employer holds its 401k, it might be more convenient if you hold your personal accounts (taxable, IRA,...) there too.
** Fidelity and Charles Schwab are recommended brokerages for their low cost and customer service, ...if your new employer's brokerage is less customer friendly.
When choosing a muni fund for your taxable account, it will probably be an ETF (exchange-traded fund), meaning the "IRS 6mo holding period requirement"* comes into play.
* If selling muni shares at a loss (TLH), you must own those shares for >6mos, to claim the full loss. You must remember/do this ...to avoid the IRS paperwork reporting hassle. "An ounce of prevention...." (This IRS rule does not apply if selling for a profit.)
See "Loss on mutual fund shares held 6 months or less" :
https://www.bogleheads.org/wiki/Tax_los ... harvesting
Simple Action Step* to manage your taxable investments: hold all (short-term: owned <1yr) shares for >6mos before selling. Why? This takes care of IRS holding period requirements for: TE dividends (>6mos requirement) and QDI (qualified dividend income,>120day requirement): ~100% of total stock market index fund, >70% of total international stock market index fund). (* Investing can get complicated, so I look for Simple Action Steps to help keep things simple.)
Vanguard does have some daily-accrual muni funds (IRS 6mo holding period does not apply), but they can only be purchased cheaply in a Vanguard account. But Vanguard's customer service is not what it was, which means you'll probably have your personal brokerage elsewhere, which means you'll be purchasing a muni ETF (rule does apply). What does owning Vanguard daily-accrual munis get me? Not much: I can buy shares today, sell them next week for a small loss, and all prorated dividends earned on the sold shares remain TE and are not used to offset the TLH ...which means I don't have a paperwork hassle at tax time.
Simple Action Steps to simplify the management of your taxable investments ...and avoid IRS paperwork reporting hassle.
--Use tax-efficient discrete funds/ETFs that differ from those in your TA accounts. (Helps with TLHing.)
--Set all investments to use Specific ID cost basis method. (So you can sell only the shares you want, to minimize tax owed on sale.)
--Redirect all distributions to settlement fund/bank. (Helps with TLHing, prevents inadvertent purchase of replacement shares.)
--Hold all ST shares for >6mos before selling. (Helps with TLHing, recharacterizations of LTCG as ST, QDI holding period.)
A simple first-look at determining a muni's acceptability is to compute its TEY (taxable-equivalent yield).
--National muni fund/ETF TEY = SEC yield / (1 -your fed tax bracket). Dividends are fed tax exempt, but state taxable.
--Single-state muni fund/ETF TEY = SEC yield / (1 -your fed tax bracket -your state tax bracket). Dividends are fed, state, city tax exempt. (This formula assumes you don't deduct mortgage interest on your fed tax return. The other formula---you do deduct mortgage interest---is left as a student exercise to find.)
It's safer to start with a national muni fund (no single-state default risk). But as you gain knowledge/experience managing your investments, and if you have the option to do so, adding a single-state muni will make those dividends triple tax exempt: fed, state, city. Some Vanguard-client BHs living in CA/NY use Vanguard single-state munis to take advantage of this option. (BH advice: allocate no more that 50% of munis to a single-state muni---beware of single-state default risk.)
Initial search of national muni ETF candidates.
--Vanguard does have one muni ETF, VTEB:
https://investor.vanguard.com/investmen ... ofile/vteb
--I've read other BHs recommending MUB:
https://www.ishares.com/us/products/239 ... i-bond-etf
--There may be other muni options, but I don't know them so you'll need to find them for yourself.
You'll want to compare your candidate muni's TEY against the taxable options: bond fund/ETF 30-day SEC yield, savings/CD APY.
I've read BHs recommending these 2 taxable bond ETFs: BND and AGG.
--BND SEC yield: 4.05%. See:
https://investor.vanguard.com/investmen ... rofile/bnd
--AGG SEC yield: 3.85%. See:
https://www.ishares.com/us/products/239 ... market-etf
--VTEB TEY = 3.26% / (1-.35) = 5.02%
--MUB TEY = 3.06% / .65 = 4.71%
I've assumed your expected salary ($300K+) puts you in the 35% fed tax bracket:
https://taxfoundation.org/2023-tax-brackets/
A more complete second-look at determining a muni's acceptability is to produce sample tax returns for each. Why? The TEY calculation misses all of the tax code effects---the right hand giveth, the left hand taketh away---which a sample tax return will reveal. (You're looking for investments that are expected to produce the most: after-tax income = total income - total fed tax - total state tax.)
How did I produce sample tax returns for my bond candidates in taxable?
--Assume total annual dividends produced by bonds = bond principal * SEC yield.
--Assume any AMT (alternative minimum tax) income is a percentage of total annual dividends. (Percentage listed in prospectus.)
I then produced sample tax returns for all my bond candidates: ST/IT/LT, treasury/muni/TBM/corporate, before/after SS.
I went through this exercise after retirement, but before taking SS. I learned that I could select one set of investments that was expected to produce more after-tax income before/after taking SS. The rest just became “Stay the course.”
You also must read the prospectus for each muni candidate. Why? You want to avoid candidates that have high fees, front/back loads, leverage, AMT exposure, ...other things that seem too risky, or make you uncomfortable.
Once you done your due diligence*---read the prospectus to avoid unnecessary risk, produced sample tax returns to wag the effects on after-tax income---you've done all you can. Then set up your investments, and ignore the market noise that wants to whipsaw your emotions. This too shall pass. (* Could also call the state attorney general and better business bureau to check out a small/unknown investment firm/manager, but if you are doing this as a novice investor, then that investment should probably be avoided …for now.)
Recommended library books.
--
The Only Investment Guide You'll Ever Need, Tobias. General personal finance topics.
--
The Bogleheads' Guide to Investing. Investing for retirement.
--
Date ...or Soul Mate, Warren. Priceless if you avoid the expense of a bad relationship/marriage/divorce.
After you start working, return for a full review of your employer’s investment options.
--Copy/paste the sticky "Asking Portfolio Questions" onto your PC as a Word document:
viewtopic.php?t=6212
--Edit/overwrite the sticky with your information.
--Post it as a new topic when done.
--And we'll resume from there.