I personally would not try to compensate secure liabilities with insecure investment forms (and an ETF is one, after all), so pay off the loan ASAP and then go into the "ETF rally." At 2.9%, a savings account—nowadays 3.75% is only available at Trade Republic—makes little sense. I recently switched from Consors to Santander and only get 3.3%. However, it's monthly, which somewhat boosts the compound interest effect. Not negligible with a six-figure investment amount. But my loan also runs at only 1.3%, which is why I think it's worth it. Going into ETFs now is just not my thing. Secure liability equals secure investment is my motto. If too little remains in between, I would also consider special repayments.