* Q3 adj. EBIT 118 mln euros vs analyst consensus for 88 mln

* Adj. EBIT helped by inventory valuation allowance of 35 mln

* Q3 sales up 22% to 1.8 bln euros vs consensus for 1.9 bln

BERLIN, Nov 4 (Reuters) - German online fashion retailer Zalando said on Wednesday it was accelerating a push to help physical stores offer their stock online and said it was well prepared for a rise in coronavirus infections in the run-up to Christmas.

"As the second coronavirus wave is starting more forcefully than anticipated, we are much better prepared than earlier in the year," said finance chief David Schroeder, adding the firm had invested in COVID-19 tests and ventilation at warehouses.

Europe's biggest pure online fashion retailer said it would pay a 500 euro ($584) bonus to each of its 14,000 employees to reward their commitment during this busy time.

To help bricks-and-mortar retailers sell online, Zalando said it will waive commissions until the end of the March, and invest 50 million euros in the programme to triple the number of stores that can sell across its platform in 2021.

In Germany, where Zalando first moved to digitalise stock in offline stores, Schroeder said the "connected retail" programme already accounts for more than 6% of gross merchandise volume (GMV) - sales made on its site by itself or by its partners.

As Europe imposes new lockdowns to fight COVID-19, Schroeder told journalists that Zalando had not yet seen the same hit to demand as it saw during lockdowns in March, although there were some delays in delivery of stock to warehouses.

Zalando shares, which have risen 90% this year, were up 1.4% at 0852 GMT.

Zalando reported third-quarter adjusted operating profit of 118 million euros on sales up 22% to 1.8 billion euros, and confirmed the increased guidance it gave last month.

The average order size was up 2.4% to 57.2 euros as shoppers continued to return less than before the pandemic.

Last month, British rival ASOS reported a quadrupling of 2019-20 profit but said it was cautious on the outlook as rising unemployment hurts its young customer base.

($1 = 0.8559 euros) (Reporting by Emma Thomasson Editing by Michelle Adair and Louise Heavens)