I'm looking to build a new home and don't want to sell stock to do it. Interactive Brokers (IB) margin rates are 1.57% on the first $100k and 1.07% on the next $900k. I currently pay 2.875% on my mortgage and would expect to pay more on a new loan in particular if it was a construction loan. A Schwab Pledged Asset Line seems to be over 3.5% (1-month LIBOR plus 3.4+%).
I expect to borrow around $400k for the new home. Why wouldn't I just transfer ~$1.2 million worth of stock into an IB account and use margin to pay for the new home? (For tax purposes I would be taking separate cash out and using the margin to pay for the stocks).
I understand there is market risk and if the stock portfolio fell below $600k (?) I would risk a margin call. I would use mid and large cap US stocks and ETFs that presumably have low margin requirements (long holdings, no shorts, no options, etc.).
I also understand there is margin rate risk that the margin rate could go up over what I could get in a traditional mortgage. I don't believe the fed funds rate is going up to 2.5%+ in my time frame of the next 5 years. Also, I will likely sell my current home once the new one is complete (within 6-12 months of starting construction/initiating the margin loan) and could use the money from that to pay off the margin loan if rates go up.
They mention a $10 minimum trade commissions per month but a.) that's trivial compared to the interest savings b.) based on their fees I might do that anyway and c.) that seems to be waived for accounts over $100k. Will they throw me out if I just let the account sit there and just make a trade or two each month?
Are there other costs/risks to the IB accounts or margin loans I'm not accounting for?
​Are there better alternatives I should be considering? Where better would be still sub-2% interest rate but with lower interest rate risk or market risk and without paying high closing costs or points. I'm willing to put up as much as $1.5 million in equities and the house worth $600k as collateral.
I expect to borrow around $400k for the new home. Why wouldn't I just transfer ~$1.2 million worth of stock into an IB account and use margin to pay for the new home? (For tax purposes I would be taking separate cash out and using the margin to pay for the stocks).
I understand there is market risk and if the stock portfolio fell below $600k (?) I would risk a margin call. I would use mid and large cap US stocks and ETFs that presumably have low margin requirements (long holdings, no shorts, no options, etc.).
I also understand there is margin rate risk that the margin rate could go up over what I could get in a traditional mortgage. I don't believe the fed funds rate is going up to 2.5%+ in my time frame of the next 5 years. Also, I will likely sell my current home once the new one is complete (within 6-12 months of starting construction/initiating the margin loan) and could use the money from that to pay off the margin loan if rates go up.
They mention a $10 minimum trade commissions per month but a.) that's trivial compared to the interest savings b.) based on their fees I might do that anyway and c.) that seems to be waived for accounts over $100k. Will they throw me out if I just let the account sit there and just make a trade or two each month?
Are there other costs/risks to the IB accounts or margin loans I'm not accounting for?
​Are there better alternatives I should be considering? Where better would be still sub-2% interest rate but with lower interest rate risk or market risk and without paying high closing costs or points. I'm willing to put up as much as $1.5 million in equities and the house worth $600k as collateral.