A third of first-time buyers are considering variable or tracker mortgages, figures from Moneyfacts show. The percentage of first-time buyers comparing costs on variable deals trebled in July to 31% from just under 10% in February. However, the data suggests that higher fixed rate costs prompted more first-time buyers to weigh up their options. The average 90% loan-to-value two-year fixed rate increased from 5.09% in February to 5.74% in July, Moneyfacts found. However, the average 90% LTV two-year tracker rate stood at 4.8% in July, resulting in monthly repayments of around £1,146 when borrowing the same amount.